./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext/tree_dsw.i --full-output --architecture 32bit


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


Checking for memory safety (deref-memtrack)
Using default analysis
Version 803cd42f
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext/tree_dsw.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6527731a1486e677feb1440c4f57330edff23abded92b5eda1225729ba969b33
--- Real Ultimate output ---
This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m
[2024-11-22 18:42:46,152 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-22 18:42:46,213 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2024-11-22 18:42:46,217 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-22 18:42:46,217 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-22 18:42:46,250 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-22 18:42:46,252 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-22 18:42:46,252 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-22 18:42:46,253 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-22 18:42:46,254 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-22 18:42:46,255 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-22 18:42:46,255 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-22 18:42:46,256 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-22 18:42:46,258 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-22 18:42:46,259 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-22 18:42:46,259 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-22 18:42:46,259 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-22 18:42:46,260 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-22 18:42:46,260 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-22 18:42:46,260 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-22 18:42:46,261 INFO  L153        SettingsManager]:  * Check for the main procedure if all allocated memory was freed=true
[2024-11-22 18:42:46,264 INFO  L153        SettingsManager]:  * Bitprecise bitfields=true
[2024-11-22 18:42:46,265 INFO  L153        SettingsManager]:  * SV-COMP memtrack compatibility mode=true
[2024-11-22 18:42:46,265 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-22 18:42:46,265 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-22 18:42:46,265 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-22 18:42:46,266 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2024-11-22 18:42:46,266 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-22 18:42:46,266 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-22 18:42:46,267 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-22 18:42:46,267 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-22 18:42:46,267 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-22 18:42:46,267 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-22 18:42:46,267 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-22 18:42:46,268 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-22 18:42:46,269 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-22 18:42:46,270 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-22 18:42:46,270 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-22 18:42:46,270 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-22 18:42:46,271 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-22 18:42:46,271 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-22 18:42:46,271 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-22 18:42:46,271 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 valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )


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 -> 6527731a1486e677feb1440c4f57330edff23abded92b5eda1225729ba969b33
[2024-11-22 18:42:46,499 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-22 18:42:46,517 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-22 18:42:46,519 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-22 18:42:46,520 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-22 18:42:46,520 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-22 18:42:46,521 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext/tree_dsw.i
[2024-11-22 18:42:47,688 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-22 18:42:47,870 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-22 18:42:47,872 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext/tree_dsw.i
[2024-11-22 18:42:47,885 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e037f7a/772a99232ee5493b8b6fb77cac3db06d/FLAGbdbb15603
[2024-11-22 18:42:47,894 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e037f7a/772a99232ee5493b8b6fb77cac3db06d
[2024-11-22 18:42:47,896 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-22 18:42:47,897 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-22 18:42:47,898 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-22 18:42:47,898 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-22 18:42:47,902 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-22 18:42:47,902 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:42:47" (1/1) ...
[2024-11-22 18:42:47,903 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac71ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:47, skipping insertion in model container
[2024-11-22 18:42:47,903 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:42:47" (1/1) ...
[2024-11-22 18:42:47,932 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-22 18:42:48,160 WARN  L1070              CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model
[2024-11-22 18:42:48,167 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-22 18:42:48,175 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-22 18:42:48,211 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-22 18:42:48,236 INFO  L204         MainTranslator]: Completed translation
[2024-11-22 18:42:48,236 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48 WrapperNode
[2024-11-22 18:42:48,236 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-22 18:42:48,237 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-22 18:42:48,238 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-22 18:42:48,238 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-22 18:42:48,243 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,278 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,311 INFO  L138                Inliner]: procedures = 124, calls = 52, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 169
[2024-11-22 18:42:48,314 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-22 18:42:48,320 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-22 18:42:48,321 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-22 18:42:48,321 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-22 18:42:48,329 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,329 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,336 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,354 INFO  L175           MemorySlicer]: Split 37 memory accesses to 3 slices as follows [2, 34, 1]. 92 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 17 writes are split as follows [0, 16, 1].
[2024-11-22 18:42:48,357 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,358 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,366 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,371 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,373 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,376 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,379 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-22 18:42:48,382 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-22 18:42:48,383 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-22 18:42:48,383 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-22 18:42:48,383 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (1/1) ...
[2024-11-22 18:42:48,388 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-22 18:42:48,400 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 18:42:48,415 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-22 18:42:48,417 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-22 18:42:48,447 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-22 18:42:48,447 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-22 18:42:48,447 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-22 18:42:48,447 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2024-11-22 18:42:48,447 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2024-11-22 18:42:48,447 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#2
[2024-11-22 18:42:48,447 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2024-11-22 18:42:48,448 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2024-11-22 18:42:48,448 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#2
[2024-11-22 18:42:48,448 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-22 18:42:48,448 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-22 18:42:48,448 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-22 18:42:48,448 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-22 18:42:48,448 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-22 18:42:48,448 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-22 18:42:48,540 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-22 18:42:48,541 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-22 18:42:48,884 INFO  L?                        ?]: Removed 184 outVars from TransFormulas that were not future-live.
[2024-11-22 18:42:48,885 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-22 18:42:48,900 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-22 18:42:48,900 INFO  L316             CfgBuilder]: Removed 4 assume(true) statements.
[2024-11-22 18:42:48,900 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:42:48 BoogieIcfgContainer
[2024-11-22 18:42:48,900 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-22 18:42:48,903 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-22 18:42:48,903 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-22 18:42:48,905 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-22 18:42:48,906 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:42:47" (1/3) ...
[2024-11-22 18:42:48,906 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a08c702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:42:48, skipping insertion in model container
[2024-11-22 18:42:48,906 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:42:48" (2/3) ...
[2024-11-22 18:42:48,907 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a08c702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:42:48, skipping insertion in model container
[2024-11-22 18:42:48,907 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:42:48" (3/3) ...
[2024-11-22 18:42:48,908 INFO  L112   eAbstractionObserver]: Analyzing ICFG tree_dsw.i
[2024-11-22 18:42:48,919 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-22 18:42:48,919 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations.
[2024-11-22 18:42:48,956 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-22 18:42:48,962 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=None, 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;@31874e36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-22 18:42:48,962 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 77 error locations.
[2024-11-22 18:42:48,965 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 160 states, 82 states have (on average 2.158536585365854) internal successors, (177), 159 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:48,970 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2024-11-22 18:42:48,970 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:48,970 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1]
[2024-11-22 18:42:48,971 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:48,976 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:48,976 INFO  L85        PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times
[2024-11-22 18:42:48,985 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:48,985 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628733716]
[2024-11-22 18:42:48,985 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:48,985 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:49,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:49,125 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:49,126 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:49,126 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628733716]
[2024-11-22 18:42:49,126 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628733716] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:49,126 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:49,127 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-22 18:42:49,128 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751506297]
[2024-11-22 18:42:49,128 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:49,131 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-22 18:42:49,131 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:49,155 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-22 18:42:49,155 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 18:42:49,157 INFO  L87              Difference]: Start difference. First operand  has 160 states, 82 states have (on average 2.158536585365854) internal successors, (177), 159 states have internal predecessors, (177), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:49,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:49,292 INFO  L93              Difference]: Finished difference Result 158 states and 171 transitions.
[2024-11-22 18:42:49,293 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-22 18:42:49,294 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3
[2024-11-22 18:42:49,294 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:49,299 INFO  L225             Difference]: With dead ends: 158
[2024-11-22 18:42:49,299 INFO  L226             Difference]: Without dead ends: 156
[2024-11-22 18:42:49,300 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 18:42:49,302 INFO  L432           NwaCegarLoop]: 114 mSDtfsCounter, 106 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:49,303 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 141 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:42:49,314 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 156 states.
[2024-11-22 18:42:49,324 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156.
[2024-11-22 18:42:49,325 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 156 states, 81 states have (on average 2.0864197530864197) internal successors, (169), 155 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:49,327 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 169 transitions.
[2024-11-22 18:42:49,327 INFO  L78                 Accepts]: Start accepts. Automaton has 156 states and 169 transitions. Word has length 3
[2024-11-22 18:42:49,328 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:49,328 INFO  L471      AbstractCegarLoop]: Abstraction has 156 states and 169 transitions.
[2024-11-22 18:42:49,328 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:49,328 INFO  L276                IsEmpty]: Start isEmpty. Operand 156 states and 169 transitions.
[2024-11-22 18:42:49,328 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2024-11-22 18:42:49,329 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:49,329 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1]
[2024-11-22 18:42:49,329 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-22 18:42:49,329 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:49,330 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:49,330 INFO  L85        PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times
[2024-11-22 18:42:49,330 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:49,330 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862091729]
[2024-11-22 18:42:49,330 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:49,330 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:49,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:49,401 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:49,402 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:49,402 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862091729]
[2024-11-22 18:42:49,403 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862091729] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:49,403 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:49,403 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-22 18:42:49,403 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891970483]
[2024-11-22 18:42:49,403 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:49,404 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-22 18:42:49,404 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:49,405 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-22 18:42:49,405 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 18:42:49,406 INFO  L87              Difference]: Start difference. First operand 156 states and 169 transitions. Second operand  has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:49,516 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:49,516 INFO  L93              Difference]: Finished difference Result 154 states and 167 transitions.
[2024-11-22 18:42:49,516 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-22 18:42:49,516 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3
[2024-11-22 18:42:49,517 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:49,518 INFO  L225             Difference]: With dead ends: 154
[2024-11-22 18:42:49,519 INFO  L226             Difference]: Without dead ends: 154
[2024-11-22 18:42:49,520 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 18:42:49,520 INFO  L432           NwaCegarLoop]: 112 mSDtfsCounter, 106 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:49,521 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 144 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:42:49,521 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 154 states.
[2024-11-22 18:42:49,530 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154.
[2024-11-22 18:42:49,531 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 154 states, 81 states have (on average 2.0617283950617282) internal successors, (167), 153 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:49,533 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 167 transitions.
[2024-11-22 18:42:49,535 INFO  L78                 Accepts]: Start accepts. Automaton has 154 states and 167 transitions. Word has length 3
[2024-11-22 18:42:49,535 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:49,535 INFO  L471      AbstractCegarLoop]: Abstraction has 154 states and 167 transitions.
[2024-11-22 18:42:49,535 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:49,535 INFO  L276                IsEmpty]: Start isEmpty. Operand 154 states and 167 transitions.
[2024-11-22 18:42:49,536 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-11-22 18:42:49,536 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:49,536 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:49,536 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-22 18:42:49,536 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:49,537 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:49,537 INFO  L85        PathProgramCache]: Analyzing trace with hash 1803031021, now seen corresponding path program 1 times
[2024-11-22 18:42:49,537 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:49,537 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575581342]
[2024-11-22 18:42:49,541 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:49,541 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:49,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:49,622 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:49,622 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:49,623 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575581342]
[2024-11-22 18:42:49,623 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575581342] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:49,623 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:49,623 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-22 18:42:49,623 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859023099]
[2024-11-22 18:42:49,624 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:49,624 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-22 18:42:49,624 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:49,625 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-22 18:42:49,625 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-22 18:42:49,625 INFO  L87              Difference]: Start difference. First operand 154 states and 167 transitions. Second operand  has 4 states, 3 states have (on average 2.3333333333333335) 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)
[2024-11-22 18:42:49,790 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:49,790 INFO  L93              Difference]: Finished difference Result 142 states and 159 transitions.
[2024-11-22 18:42:49,790 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 18:42:49,791 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 2.3333333333333335) 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
[2024-11-22 18:42:49,791 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:49,791 INFO  L225             Difference]: With dead ends: 142
[2024-11-22 18:42:49,791 INFO  L226             Difference]: Without dead ends: 142
[2024-11-22 18:42:49,792 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-22 18:42:49,792 INFO  L432           NwaCegarLoop]: 72 mSDtfsCounter, 165 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:49,793 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 109 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-22 18:42:49,793 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2024-11-22 18:42:49,799 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139.
[2024-11-22 18:42:49,802 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 139 states, 84 states have (on average 1.8452380952380953) internal successors, (155), 138 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:49,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions.
[2024-11-22 18:42:49,804 INFO  L78                 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 7
[2024-11-22 18:42:49,804 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:49,805 INFO  L471      AbstractCegarLoop]: Abstraction has 139 states and 155 transitions.
[2024-11-22 18:42:49,805 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 2.3333333333333335) 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)
[2024-11-22 18:42:49,805 INFO  L276                IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions.
[2024-11-22 18:42:49,805 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-11-22 18:42:49,805 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:49,805 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:49,805 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-22 18:42:49,806 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:49,806 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:49,806 INFO  L85        PathProgramCache]: Analyzing trace with hash 1803031022, now seen corresponding path program 1 times
[2024-11-22 18:42:49,806 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:49,806 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636109213]
[2024-11-22 18:42:49,807 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:49,807 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:49,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:49,911 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:49,911 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:49,911 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636109213]
[2024-11-22 18:42:49,911 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636109213] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:49,911 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:49,911 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-22 18:42:49,911 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961768637]
[2024-11-22 18:42:49,912 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:49,912 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-22 18:42:49,912 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:49,912 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-22 18:42:49,912 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-22 18:42:49,912 INFO  L87              Difference]: Start difference. First operand 139 states and 155 transitions. Second operand  has 4 states, 3 states have (on average 2.3333333333333335) 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)
[2024-11-22 18:42:50,091 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:50,091 INFO  L93              Difference]: Finished difference Result 184 states and 206 transitions.
[2024-11-22 18:42:50,092 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-22 18:42:50,093 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 2.3333333333333335) 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
[2024-11-22 18:42:50,093 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:50,093 INFO  L225             Difference]: With dead ends: 184
[2024-11-22 18:42:50,094 INFO  L226             Difference]: Without dead ends: 184
[2024-11-22 18:42:50,094 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-22 18:42:50,095 INFO  L432           NwaCegarLoop]: 93 mSDtfsCounter, 188 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:50,097 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 175 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-22 18:42:50,098 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 184 states.
[2024-11-22 18:42:50,107 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 174.
[2024-11-22 18:42:50,107 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 174 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 173 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,108 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 201 transitions.
[2024-11-22 18:42:50,109 INFO  L78                 Accepts]: Start accepts. Automaton has 174 states and 201 transitions. Word has length 7
[2024-11-22 18:42:50,109 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:50,110 INFO  L471      AbstractCegarLoop]: Abstraction has 174 states and 201 transitions.
[2024-11-22 18:42:50,110 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 2.3333333333333335) 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)
[2024-11-22 18:42:50,110 INFO  L276                IsEmpty]: Start isEmpty. Operand 174 states and 201 transitions.
[2024-11-22 18:42:50,110 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2024-11-22 18:42:50,110 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:50,111 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:50,111 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-22 18:42:50,111 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:50,111 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:50,111 INFO  L85        PathProgramCache]: Analyzing trace with hash 1237590610, now seen corresponding path program 1 times
[2024-11-22 18:42:50,111 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:50,112 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761716465]
[2024-11-22 18:42:50,113 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:50,113 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:50,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:50,212 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:50,213 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:50,213 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761716465]
[2024-11-22 18:42:50,213 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761716465] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:50,213 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:50,213 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-22 18:42:50,213 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147182488]
[2024-11-22 18:42:50,213 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:50,214 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-22 18:42:50,215 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:50,215 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-22 18:42:50,215 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-22 18:42:50,215 INFO  L87              Difference]: Start difference. First operand 174 states and 201 transitions. Second operand  has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,313 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:50,313 INFO  L93              Difference]: Finished difference Result 175 states and 202 transitions.
[2024-11-22 18:42:50,313 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 18:42:50,313 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2024-11-22 18:42:50,314 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:50,315 INFO  L225             Difference]: With dead ends: 175
[2024-11-22 18:42:50,315 INFO  L226             Difference]: Without dead ends: 175
[2024-11-22 18:42:50,315 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-22 18:42:50,316 INFO  L432           NwaCegarLoop]: 136 mSDtfsCounter, 107 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:50,316 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 407 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:42:50,317 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 175 states.
[2024-11-22 18:42:50,324 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175.
[2024-11-22 18:42:50,325 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 175 states, 120 states have (on average 1.6833333333333333) internal successors, (202), 174 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,325 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 202 transitions.
[2024-11-22 18:42:50,325 INFO  L78                 Accepts]: Start accepts. Automaton has 175 states and 202 transitions. Word has length 10
[2024-11-22 18:42:50,326 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:50,326 INFO  L471      AbstractCegarLoop]: Abstraction has 175 states and 202 transitions.
[2024-11-22 18:42:50,326 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,326 INFO  L276                IsEmpty]: Start isEmpty. Operand 175 states and 202 transitions.
[2024-11-22 18:42:50,333 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-22 18:42:50,333 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:50,333 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:50,333 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-22 18:42:50,334 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:50,334 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:50,334 INFO  L85        PathProgramCache]: Analyzing trace with hash -289391618, now seen corresponding path program 1 times
[2024-11-22 18:42:50,334 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:50,334 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969471434]
[2024-11-22 18:42:50,334 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:50,334 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:50,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:50,392 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:50,392 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:50,392 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969471434]
[2024-11-22 18:42:50,392 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969471434] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:50,393 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:50,393 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-22 18:42:50,393 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702101442]
[2024-11-22 18:42:50,393 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:50,393 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-22 18:42:50,394 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:50,394 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-22 18:42:50,408 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-22 18:42:50,408 INFO  L87              Difference]: Start difference. First operand 175 states and 202 transitions. Second operand  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,524 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:50,525 INFO  L93              Difference]: Finished difference Result 175 states and 201 transitions.
[2024-11-22 18:42:50,525 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-22 18:42:50,525 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11
[2024-11-22 18:42:50,525 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:50,526 INFO  L225             Difference]: With dead ends: 175
[2024-11-22 18:42:50,526 INFO  L226             Difference]: Without dead ends: 175
[2024-11-22 18:42:50,526 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-22 18:42:50,527 INFO  L432           NwaCegarLoop]: 106 mSDtfsCounter, 103 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:50,527 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 202 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:42:50,528 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 175 states.
[2024-11-22 18:42:50,530 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174.
[2024-11-22 18:42:50,530 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 174 states, 119 states have (on average 1.680672268907563) internal successors, (200), 173 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,531 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 200 transitions.
[2024-11-22 18:42:50,531 INFO  L78                 Accepts]: Start accepts. Automaton has 174 states and 200 transitions. Word has length 11
[2024-11-22 18:42:50,531 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:50,531 INFO  L471      AbstractCegarLoop]: Abstraction has 174 states and 200 transitions.
[2024-11-22 18:42:50,531 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,531 INFO  L276                IsEmpty]: Start isEmpty. Operand 174 states and 200 transitions.
[2024-11-22 18:42:50,532 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-22 18:42:50,532 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:50,532 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:50,532 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-22 18:42:50,532 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:50,533 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:50,533 INFO  L85        PathProgramCache]: Analyzing trace with hash -1836248265, now seen corresponding path program 1 times
[2024-11-22 18:42:50,533 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:50,533 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203912889]
[2024-11-22 18:42:50,533 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:50,533 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:50,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:50,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:50,555 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:50,556 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203912889]
[2024-11-22 18:42:50,556 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203912889] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:50,556 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:50,556 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-22 18:42:50,556 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342751773]
[2024-11-22 18:42:50,556 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:50,556 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-22 18:42:50,557 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:50,557 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-22 18:42:50,557 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 18:42:50,557 INFO  L87              Difference]: Start difference. First operand 174 states and 200 transitions. Second operand  has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,564 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:50,564 INFO  L93              Difference]: Finished difference Result 176 states and 202 transitions.
[2024-11-22 18:42:50,564 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-22 18:42:50,565 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) Word has length 14
[2024-11-22 18:42:50,565 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:50,565 INFO  L225             Difference]: With dead ends: 176
[2024-11-22 18:42:50,565 INFO  L226             Difference]: Without dead ends: 176
[2024-11-22 18:42:50,565 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 18:42:50,566 INFO  L432           NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 290 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
[2024-11-22 18:42:50,566 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 290 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-22 18:42:50,567 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 176 states.
[2024-11-22 18:42:50,570 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176.
[2024-11-22 18:42:50,571 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 176 states, 121 states have (on average 1.6694214876033058) internal successors, (202), 175 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,571 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 202 transitions.
[2024-11-22 18:42:50,571 INFO  L78                 Accepts]: Start accepts. Automaton has 176 states and 202 transitions. Word has length 14
[2024-11-22 18:42:50,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:50,571 INFO  L471      AbstractCegarLoop]: Abstraction has 176 states and 202 transitions.
[2024-11-22 18:42:50,571 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,572 INFO  L276                IsEmpty]: Start isEmpty. Operand 176 states and 202 transitions.
[2024-11-22 18:42:50,572 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-11-22 18:42:50,572 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:50,575 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:50,575 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-22 18:42:50,575 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:50,576 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:50,577 INFO  L85        PathProgramCache]: Analyzing trace with hash 1356387674, now seen corresponding path program 1 times
[2024-11-22 18:42:50,577 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:50,577 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28573225]
[2024-11-22 18:42:50,577 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:50,577 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:50,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:50,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:50,752 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:50,752 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28573225]
[2024-11-22 18:42:50,752 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28573225] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:50,752 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:50,752 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-22 18:42:50,753 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991866903]
[2024-11-22 18:42:50,753 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:50,753 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-22 18:42:50,753 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:50,753 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-22 18:42:50,754 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-22 18:42:50,754 INFO  L87              Difference]: Start difference. First operand 176 states and 202 transitions. Second operand  has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,921 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:50,921 INFO  L93              Difference]: Finished difference Result 208 states and 240 transitions.
[2024-11-22 18:42:50,922 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-22 18:42:50,922 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 16
[2024-11-22 18:42:50,922 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:50,923 INFO  L225             Difference]: With dead ends: 208
[2024-11-22 18:42:50,923 INFO  L226             Difference]: Without dead ends: 208
[2024-11-22 18:42:50,923 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2024-11-22 18:42:50,923 INFO  L432           NwaCegarLoop]: 133 mSDtfsCounter, 51 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:50,924 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 577 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:42:50,924 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 208 states.
[2024-11-22 18:42:50,927 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 190.
[2024-11-22 18:42:50,928 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 190 states, 135 states have (on average 1.637037037037037) internal successors, (221), 189 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,929 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 221 transitions.
[2024-11-22 18:42:50,930 INFO  L78                 Accepts]: Start accepts. Automaton has 190 states and 221 transitions. Word has length 16
[2024-11-22 18:42:50,930 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:50,930 INFO  L471      AbstractCegarLoop]: Abstraction has 190 states and 221 transitions.
[2024-11-22 18:42:50,930 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:50,930 INFO  L276                IsEmpty]: Start isEmpty. Operand 190 states and 221 transitions.
[2024-11-22 18:42:50,931 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-11-22 18:42:50,932 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:50,932 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:50,932 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-22 18:42:50,932 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:50,932 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:50,932 INFO  L85        PathProgramCache]: Analyzing trace with hash -1853935746, now seen corresponding path program 1 times
[2024-11-22 18:42:50,932 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:50,932 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785587751]
[2024-11-22 18:42:50,932 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:50,932 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:50,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:51,003 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:51,003 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:51,003 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785587751]
[2024-11-22 18:42:51,004 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785587751] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:51,004 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:51,004 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-22 18:42:51,004 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988577944]
[2024-11-22 18:42:51,005 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:51,007 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-22 18:42:51,007 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:51,007 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-22 18:42:51,008 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-22 18:42:51,008 INFO  L87              Difference]: Start difference. First operand 190 states and 221 transitions. Second operand  has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:51,158 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:51,159 INFO  L93              Difference]: Finished difference Result 207 states and 242 transitions.
[2024-11-22 18:42:51,159 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 18:42:51,159 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18
[2024-11-22 18:42:51,159 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:51,160 INFO  L225             Difference]: With dead ends: 207
[2024-11-22 18:42:51,160 INFO  L226             Difference]: Without dead ends: 207
[2024-11-22 18:42:51,161 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-22 18:42:51,161 INFO  L432           NwaCegarLoop]: 93 mSDtfsCounter, 75 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:51,162 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 172 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:42:51,163 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 207 states.
[2024-11-22 18:42:51,165 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 192.
[2024-11-22 18:42:51,166 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 192 states, 137 states have (on average 1.6423357664233578) internal successors, (225), 191 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:51,167 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 225 transitions.
[2024-11-22 18:42:51,167 INFO  L78                 Accepts]: Start accepts. Automaton has 192 states and 225 transitions. Word has length 18
[2024-11-22 18:42:51,167 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:51,167 INFO  L471      AbstractCegarLoop]: Abstraction has 192 states and 225 transitions.
[2024-11-22 18:42:51,167 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:51,168 INFO  L276                IsEmpty]: Start isEmpty. Operand 192 states and 225 transitions.
[2024-11-22 18:42:51,169 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-11-22 18:42:51,169 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:51,169 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:51,169 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-22 18:42:51,169 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:51,170 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:51,172 INFO  L85        PathProgramCache]: Analyzing trace with hash -1853935745, now seen corresponding path program 1 times
[2024-11-22 18:42:51,173 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:51,174 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188090551]
[2024-11-22 18:42:51,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:51,174 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:51,190 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:51,358 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-22 18:42:51,358 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:51,359 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188090551]
[2024-11-22 18:42:51,359 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188090551] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:51,359 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:51,359 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-22 18:42:51,359 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533075918]
[2024-11-22 18:42:51,359 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:51,359 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-22 18:42:51,359 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:51,359 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-22 18:42:51,359 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-22 18:42:51,360 INFO  L87              Difference]: Start difference. First operand 192 states and 225 transitions. Second operand  has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:51,590 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:51,591 INFO  L93              Difference]: Finished difference Result 225 states and 258 transitions.
[2024-11-22 18:42:51,591 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-22 18:42:51,591 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 18
[2024-11-22 18:42:51,591 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:51,592 INFO  L225             Difference]: With dead ends: 225
[2024-11-22 18:42:51,592 INFO  L226             Difference]: Without dead ends: 225
[2024-11-22 18:42:51,592 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2024-11-22 18:42:51,592 INFO  L432           NwaCegarLoop]: 93 mSDtfsCounter, 262 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:51,592 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 242 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-22 18:42:51,593 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 225 states.
[2024-11-22 18:42:51,595 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 195.
[2024-11-22 18:42:51,595 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 195 states, 140 states have (on average 1.6428571428571428) internal successors, (230), 194 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:51,595 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 230 transitions.
[2024-11-22 18:42:51,595 INFO  L78                 Accepts]: Start accepts. Automaton has 195 states and 230 transitions. Word has length 18
[2024-11-22 18:42:51,595 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:51,596 INFO  L471      AbstractCegarLoop]: Abstraction has 195 states and 230 transitions.
[2024-11-22 18:42:51,596 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:51,596 INFO  L276                IsEmpty]: Start isEmpty. Operand 195 states and 230 transitions.
[2024-11-22 18:42:51,596 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-11-22 18:42:51,596 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:51,596 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:51,596 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-11-22 18:42:51,597 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:51,597 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:51,597 INFO  L85        PathProgramCache]: Analyzing trace with hash -1853933824, now seen corresponding path program 1 times
[2024-11-22 18:42:51,597 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:51,597 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678975182]
[2024-11-22 18:42:51,597 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:51,597 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:51,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:51,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:51,749 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:51,749 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678975182]
[2024-11-22 18:42:51,749 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678975182] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:51,749 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:51,749 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-22 18:42:51,749 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213684450]
[2024-11-22 18:42:51,749 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:51,750 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-22 18:42:51,750 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:51,750 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-22 18:42:51,750 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-22 18:42:51,750 INFO  L87              Difference]: Start difference. First operand 195 states and 230 transitions. Second operand  has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:51,916 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:51,916 INFO  L93              Difference]: Finished difference Result 217 states and 253 transitions.
[2024-11-22 18:42:51,917 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-22 18:42:51,917 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 18
[2024-11-22 18:42:51,917 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:51,918 INFO  L225             Difference]: With dead ends: 217
[2024-11-22 18:42:51,918 INFO  L226             Difference]: Without dead ends: 217
[2024-11-22 18:42:51,918 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2024-11-22 18:42:51,918 INFO  L432           NwaCegarLoop]: 133 mSDtfsCounter, 48 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:51,918 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 672 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:42:51,919 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 217 states.
[2024-11-22 18:42:51,920 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 205.
[2024-11-22 18:42:51,921 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 205 states, 150 states have (on average 1.6) internal successors, (240), 204 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:51,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 240 transitions.
[2024-11-22 18:42:51,923 INFO  L78                 Accepts]: Start accepts. Automaton has 205 states and 240 transitions. Word has length 18
[2024-11-22 18:42:51,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:51,923 INFO  L471      AbstractCegarLoop]: Abstraction has 205 states and 240 transitions.
[2024-11-22 18:42:51,923 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:51,923 INFO  L276                IsEmpty]: Start isEmpty. Operand 205 states and 240 transitions.
[2024-11-22 18:42:51,923 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-11-22 18:42:51,923 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:51,923 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:51,924 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-11-22 18:42:51,924 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:51,924 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:51,924 INFO  L85        PathProgramCache]: Analyzing trace with hash 1821793954, now seen corresponding path program 1 times
[2024-11-22 18:42:51,924 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:51,924 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503193965]
[2024-11-22 18:42:51,924 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:51,924 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:51,935 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:51,997 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:51,998 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:51,998 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503193965]
[2024-11-22 18:42:51,998 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503193965] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:51,998 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:51,998 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-22 18:42:51,999 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511743953]
[2024-11-22 18:42:51,999 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:51,999 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-22 18:42:51,999 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:52,000 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-22 18:42:52,000 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-22 18:42:52,000 INFO  L87              Difference]: Start difference. First operand 205 states and 240 transitions. Second operand  has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:52,141 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:52,141 INFO  L93              Difference]: Finished difference Result 204 states and 238 transitions.
[2024-11-22 18:42:52,141 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 18:42:52,141 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 18
[2024-11-22 18:42:52,141 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:52,142 INFO  L225             Difference]: With dead ends: 204
[2024-11-22 18:42:52,142 INFO  L226             Difference]: Without dead ends: 204
[2024-11-22 18:42:52,142 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-22 18:42:52,142 INFO  L432           NwaCegarLoop]: 143 mSDtfsCounter, 3 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:52,143 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 356 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:42:52,143 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 204 states.
[2024-11-22 18:42:52,144 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204.
[2024-11-22 18:42:52,145 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 204 states, 150 states have (on average 1.5866666666666667) internal successors, (238), 203 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:52,145 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 238 transitions.
[2024-11-22 18:42:52,145 INFO  L78                 Accepts]: Start accepts. Automaton has 204 states and 238 transitions. Word has length 18
[2024-11-22 18:42:52,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:52,146 INFO  L471      AbstractCegarLoop]: Abstraction has 204 states and 238 transitions.
[2024-11-22 18:42:52,146 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:52,146 INFO  L276                IsEmpty]: Start isEmpty. Operand 204 states and 238 transitions.
[2024-11-22 18:42:52,146 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-11-22 18:42:52,146 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:52,146 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:52,146 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-11-22 18:42:52,147 INFO  L396      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:52,147 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:52,147 INFO  L85        PathProgramCache]: Analyzing trace with hash 1821793955, now seen corresponding path program 1 times
[2024-11-22 18:42:52,147 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:52,147 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059540343]
[2024-11-22 18:42:52,147 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:52,147 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:52,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:52,253 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:52,253 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:52,254 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059540343]
[2024-11-22 18:42:52,254 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059540343] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:52,254 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:52,254 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-22 18:42:52,254 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151250963]
[2024-11-22 18:42:52,254 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:52,254 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-22 18:42:52,254 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:52,255 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-22 18:42:52,255 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-22 18:42:52,255 INFO  L87              Difference]: Start difference. First operand 204 states and 238 transitions. Second operand  has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:52,432 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:52,432 INFO  L93              Difference]: Finished difference Result 203 states and 236 transitions.
[2024-11-22 18:42:52,433 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 18:42:52,433 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 18
[2024-11-22 18:42:52,433 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:52,434 INFO  L225             Difference]: With dead ends: 203
[2024-11-22 18:42:52,434 INFO  L226             Difference]: Without dead ends: 203
[2024-11-22 18:42:52,434 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-22 18:42:52,434 INFO  L432           NwaCegarLoop]: 142 mSDtfsCounter, 2 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:52,434 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 338 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-22 18:42:52,435 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 203 states.
[2024-11-22 18:42:52,438 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203.
[2024-11-22 18:42:52,438 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 203 states, 150 states have (on average 1.5733333333333333) internal successors, (236), 202 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:52,439 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 236 transitions.
[2024-11-22 18:42:52,439 INFO  L78                 Accepts]: Start accepts. Automaton has 203 states and 236 transitions. Word has length 18
[2024-11-22 18:42:52,439 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:52,439 INFO  L471      AbstractCegarLoop]: Abstraction has 203 states and 236 transitions.
[2024-11-22 18:42:52,440 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:52,440 INFO  L276                IsEmpty]: Start isEmpty. Operand 203 states and 236 transitions.
[2024-11-22 18:42:52,440 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-11-22 18:42:52,440 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:52,440 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:52,441 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2024-11-22 18:42:52,441 INFO  L396      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:52,441 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:52,441 INFO  L85        PathProgramCache]: Analyzing trace with hash -1637434257, now seen corresponding path program 1 times
[2024-11-22 18:42:52,441 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:52,442 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679029676]
[2024-11-22 18:42:52,442 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:52,442 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:52,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:52,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:52,503 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:52,503 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679029676]
[2024-11-22 18:42:52,504 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679029676] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 18:42:52,504 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312464427]
[2024-11-22 18:42:52,504 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:52,504 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 18:42:52,504 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 18:42:52,506 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-22 18:42:52,507 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-22 18:42:52,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:52,581 INFO  L255         TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-22 18:42:52,585 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 18:42:52,652 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-22 18:42:52,652 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-22 18:42:52,652 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312464427] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:52,652 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-22 18:42:52,652 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9
[2024-11-22 18:42:52,653 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064492876]
[2024-11-22 18:42:52,653 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:52,653 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-22 18:42:52,653 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:52,654 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-22 18:42:52,654 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2024-11-22 18:42:52,654 INFO  L87              Difference]: Start difference. First operand 203 states and 236 transitions. Second operand  has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:52,754 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:52,754 INFO  L93              Difference]: Finished difference Result 216 states and 250 transitions.
[2024-11-22 18:42:52,754 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 18:42:52,755 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19
[2024-11-22 18:42:52,755 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:52,755 INFO  L225             Difference]: With dead ends: 216
[2024-11-22 18:42:52,756 INFO  L226             Difference]: Without dead ends: 216
[2024-11-22 18:42:52,756 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2024-11-22 18:42:52,756 INFO  L432           NwaCegarLoop]: 134 mSDtfsCounter, 128 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:52,756 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 386 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:42:52,757 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 216 states.
[2024-11-22 18:42:52,759 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 202.
[2024-11-22 18:42:52,760 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 202 states, 149 states have (on average 1.570469798657718) internal successors, (234), 201 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:52,760 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 234 transitions.
[2024-11-22 18:42:52,760 INFO  L78                 Accepts]: Start accepts. Automaton has 202 states and 234 transitions. Word has length 19
[2024-11-22 18:42:52,761 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:52,761 INFO  L471      AbstractCegarLoop]: Abstraction has 202 states and 234 transitions.
[2024-11-22 18:42:52,761 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:52,761 INFO  L276                IsEmpty]: Start isEmpty. Operand 202 states and 234 transitions.
[2024-11-22 18:42:52,761 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2024-11-22 18:42:52,761 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:52,762 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:52,771 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-22 18:42:52,962 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,SelfDestructingSolverStorable13
[2024-11-22 18:42:52,962 INFO  L396      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:52,963 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:52,963 INFO  L85        PathProgramCache]: Analyzing trace with hash 1856983029, now seen corresponding path program 1 times
[2024-11-22 18:42:52,963 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:52,963 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075261672]
[2024-11-22 18:42:52,963 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:52,963 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:52,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:53,085 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:53,085 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:53,085 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075261672]
[2024-11-22 18:42:53,085 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075261672] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:53,085 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:53,085 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-22 18:42:53,085 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117487133]
[2024-11-22 18:42:53,085 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:53,086 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-22 18:42:53,086 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:53,086 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-22 18:42:53,086 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-22 18:42:53,086 INFO  L87              Difference]: Start difference. First operand 202 states and 234 transitions. Second operand  has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:53,413 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:53,413 INFO  L93              Difference]: Finished difference Result 207 states and 240 transitions.
[2024-11-22 18:42:53,413 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-22 18:42:53,413 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 21
[2024-11-22 18:42:53,413 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:53,414 INFO  L225             Difference]: With dead ends: 207
[2024-11-22 18:42:53,414 INFO  L226             Difference]: Without dead ends: 207
[2024-11-22 18:42:53,414 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2024-11-22 18:42:53,415 INFO  L432           NwaCegarLoop]: 94 mSDtfsCounter, 62 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:53,415 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 381 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-22 18:42:53,415 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 207 states.
[2024-11-22 18:42:53,417 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201.
[2024-11-22 18:42:53,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 201 states, 149 states have (on average 1.5570469798657718) internal successors, (232), 200 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:53,417 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 232 transitions.
[2024-11-22 18:42:53,417 INFO  L78                 Accepts]: Start accepts. Automaton has 201 states and 232 transitions. Word has length 21
[2024-11-22 18:42:53,418 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:53,418 INFO  L471      AbstractCegarLoop]: Abstraction has 201 states and 232 transitions.
[2024-11-22 18:42:53,418 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:53,418 INFO  L276                IsEmpty]: Start isEmpty. Operand 201 states and 232 transitions.
[2024-11-22 18:42:53,418 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2024-11-22 18:42:53,418 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:53,418 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:53,418 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2024-11-22 18:42:53,419 INFO  L396      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:53,419 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:53,419 INFO  L85        PathProgramCache]: Analyzing trace with hash 1856983030, now seen corresponding path program 1 times
[2024-11-22 18:42:53,419 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:53,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372419713]
[2024-11-22 18:42:53,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:53,419 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:53,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:53,581 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:53,582 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:53,582 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372419713]
[2024-11-22 18:42:53,582 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372419713] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:53,582 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:53,582 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-22 18:42:53,582 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778626749]
[2024-11-22 18:42:53,582 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:53,583 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-22 18:42:53,583 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:53,583 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-22 18:42:53,583 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-22 18:42:53,583 INFO  L87              Difference]: Start difference. First operand 201 states and 232 transitions. Second operand  has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:53,842 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:53,842 INFO  L93              Difference]: Finished difference Result 206 states and 238 transitions.
[2024-11-22 18:42:53,842 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-22 18:42:53,843 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 21
[2024-11-22 18:42:53,843 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:53,843 INFO  L225             Difference]: With dead ends: 206
[2024-11-22 18:42:53,843 INFO  L226             Difference]: Without dead ends: 206
[2024-11-22 18:42:53,844 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2024-11-22 18:42:53,844 INFO  L432           NwaCegarLoop]: 94 mSDtfsCounter, 61 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:53,844 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 278 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-22 18:42:53,845 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 206 states.
[2024-11-22 18:42:53,846 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 200.
[2024-11-22 18:42:53,846 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 200 states, 149 states have (on average 1.5436241610738255) internal successors, (230), 199 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:53,847 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 230 transitions.
[2024-11-22 18:42:53,847 INFO  L78                 Accepts]: Start accepts. Automaton has 200 states and 230 transitions. Word has length 21
[2024-11-22 18:42:53,847 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:53,847 INFO  L471      AbstractCegarLoop]: Abstraction has 200 states and 230 transitions.
[2024-11-22 18:42:53,847 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:53,847 INFO  L276                IsEmpty]: Start isEmpty. Operand 200 states and 230 transitions.
[2024-11-22 18:42:53,848 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-11-22 18:42:53,848 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:53,848 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:53,848 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2024-11-22 18:42:53,848 INFO  L396      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:53,849 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:53,849 INFO  L85        PathProgramCache]: Analyzing trace with hash 27790463, now seen corresponding path program 1 times
[2024-11-22 18:42:53,849 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:53,850 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570013888]
[2024-11-22 18:42:53,850 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:53,850 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:53,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:53,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:53,919 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:53,919 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570013888]
[2024-11-22 18:42:53,919 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570013888] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:53,919 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:53,919 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-22 18:42:53,919 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566253211]
[2024-11-22 18:42:53,919 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:53,919 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-22 18:42:53,919 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:53,920 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-22 18:42:53,920 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-22 18:42:53,920 INFO  L87              Difference]: Start difference. First operand 200 states and 230 transitions. Second operand  has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:54,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:54,067 INFO  L93              Difference]: Finished difference Result 199 states and 228 transitions.
[2024-11-22 18:42:54,067 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 18:42:54,068 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2024-11-22 18:42:54,068 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:54,068 INFO  L225             Difference]: With dead ends: 199
[2024-11-22 18:42:54,068 INFO  L226             Difference]: Without dead ends: 199
[2024-11-22 18:42:54,068 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-22 18:42:54,069 INFO  L432           NwaCegarLoop]: 139 mSDtfsCounter, 3 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:54,069 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 346 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:42:54,069 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 199 states.
[2024-11-22 18:42:54,070 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199.
[2024-11-22 18:42:54,071 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 199 states, 149 states have (on average 1.5302013422818792) internal successors, (228), 198 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:54,071 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 228 transitions.
[2024-11-22 18:42:54,071 INFO  L78                 Accepts]: Start accepts. Automaton has 199 states and 228 transitions. Word has length 22
[2024-11-22 18:42:54,071 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:54,072 INFO  L471      AbstractCegarLoop]: Abstraction has 199 states and 228 transitions.
[2024-11-22 18:42:54,072 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:54,072 INFO  L276                IsEmpty]: Start isEmpty. Operand 199 states and 228 transitions.
[2024-11-22 18:42:54,072 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-11-22 18:42:54,072 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:54,072 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:54,072 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2024-11-22 18:42:54,072 INFO  L396      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:54,073 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:54,073 INFO  L85        PathProgramCache]: Analyzing trace with hash 27790464, now seen corresponding path program 1 times
[2024-11-22 18:42:54,073 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:54,073 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38718158]
[2024-11-22 18:42:54,073 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:54,073 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:54,082 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:54,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:54,168 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:54,168 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38718158]
[2024-11-22 18:42:54,168 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38718158] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:54,168 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:54,168 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-22 18:42:54,168 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940860988]
[2024-11-22 18:42:54,168 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:54,168 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-22 18:42:54,168 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:54,169 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-22 18:42:54,169 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-22 18:42:54,169 INFO  L87              Difference]: Start difference. First operand 199 states and 228 transitions. Second operand  has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:54,324 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:54,324 INFO  L93              Difference]: Finished difference Result 198 states and 226 transitions.
[2024-11-22 18:42:54,325 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 18:42:54,325 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2024-11-22 18:42:54,325 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:54,326 INFO  L225             Difference]: With dead ends: 198
[2024-11-22 18:42:54,326 INFO  L226             Difference]: Without dead ends: 198
[2024-11-22 18:42:54,326 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-22 18:42:54,327 INFO  L432           NwaCegarLoop]: 138 mSDtfsCounter, 2 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:54,327 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 328 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:42:54,328 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 198 states.
[2024-11-22 18:42:54,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198.
[2024-11-22 18:42:54,329 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 198 states, 149 states have (on average 1.516778523489933) internal successors, (226), 197 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:54,330 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 226 transitions.
[2024-11-22 18:42:54,330 INFO  L78                 Accepts]: Start accepts. Automaton has 198 states and 226 transitions. Word has length 22
[2024-11-22 18:42:54,330 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:54,330 INFO  L471      AbstractCegarLoop]: Abstraction has 198 states and 226 transitions.
[2024-11-22 18:42:54,330 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:54,330 INFO  L276                IsEmpty]: Start isEmpty. Operand 198 states and 226 transitions.
[2024-11-22 18:42:54,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-11-22 18:42:54,331 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:54,331 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:54,331 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2024-11-22 18:42:54,331 INFO  L396      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:54,331 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:54,331 INFO  L85        PathProgramCache]: Analyzing trace with hash -1022919462, now seen corresponding path program 1 times
[2024-11-22 18:42:54,331 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:54,332 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699937141]
[2024-11-22 18:42:54,332 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:54,332 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:54,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:54,462 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:54,463 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:54,463 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699937141]
[2024-11-22 18:42:54,463 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699937141] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:54,463 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:54,463 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-22 18:42:54,463 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992150177]
[2024-11-22 18:42:54,463 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:54,464 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-22 18:42:54,464 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:54,464 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-22 18:42:54,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-22 18:42:54,465 INFO  L87              Difference]: Start difference. First operand 198 states and 226 transitions. Second operand  has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:54,688 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:54,688 INFO  L93              Difference]: Finished difference Result 203 states and 233 transitions.
[2024-11-22 18:42:54,688 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-22 18:42:54,688 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 25
[2024-11-22 18:42:54,689 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:54,689 INFO  L225             Difference]: With dead ends: 203
[2024-11-22 18:42:54,689 INFO  L226             Difference]: Without dead ends: 203
[2024-11-22 18:42:54,689 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2024-11-22 18:42:54,690 INFO  L432           NwaCegarLoop]: 90 mSDtfsCounter, 53 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:54,690 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 270 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-22 18:42:54,690 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 203 states.
[2024-11-22 18:42:54,692 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197.
[2024-11-22 18:42:54,693 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 197 states, 149 states have (on average 1.5100671140939597) internal successors, (225), 196 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:54,694 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 225 transitions.
[2024-11-22 18:42:54,694 INFO  L78                 Accepts]: Start accepts. Automaton has 197 states and 225 transitions. Word has length 25
[2024-11-22 18:42:54,694 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:54,694 INFO  L471      AbstractCegarLoop]: Abstraction has 197 states and 225 transitions.
[2024-11-22 18:42:54,695 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:54,695 INFO  L276                IsEmpty]: Start isEmpty. Operand 197 states and 225 transitions.
[2024-11-22 18:42:54,695 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-11-22 18:42:54,695 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:54,695 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:54,695 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2024-11-22 18:42:54,695 INFO  L396      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:54,696 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:54,696 INFO  L85        PathProgramCache]: Analyzing trace with hash -1022919461, now seen corresponding path program 1 times
[2024-11-22 18:42:54,696 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:54,696 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666886356]
[2024-11-22 18:42:54,696 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:54,696 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:54,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:54,851 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:54,851 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:54,852 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666886356]
[2024-11-22 18:42:54,852 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666886356] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:42:54,852 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:42:54,852 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-22 18:42:54,852 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554432529]
[2024-11-22 18:42:54,852 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:42:54,852 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-22 18:42:54,852 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:54,853 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-22 18:42:54,853 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-22 18:42:54,853 INFO  L87              Difference]: Start difference. First operand 197 states and 225 transitions. Second operand  has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:55,085 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:55,085 INFO  L93              Difference]: Finished difference Result 202 states and 232 transitions.
[2024-11-22 18:42:55,086 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-22 18:42:55,086 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 25
[2024-11-22 18:42:55,086 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:55,086 INFO  L225             Difference]: With dead ends: 202
[2024-11-22 18:42:55,086 INFO  L226             Difference]: Without dead ends: 202
[2024-11-22 18:42:55,087 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2024-11-22 18:42:55,087 INFO  L432           NwaCegarLoop]: 90 mSDtfsCounter, 53 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:55,087 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 270 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-22 18:42:55,087 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 202 states.
[2024-11-22 18:42:55,089 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196.
[2024-11-22 18:42:55,089 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 196 states, 149 states have (on average 1.5033557046979866) internal successors, (224), 195 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:55,090 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 224 transitions.
[2024-11-22 18:42:55,090 INFO  L78                 Accepts]: Start accepts. Automaton has 196 states and 224 transitions. Word has length 25
[2024-11-22 18:42:55,090 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:55,090 INFO  L471      AbstractCegarLoop]: Abstraction has 196 states and 224 transitions.
[2024-11-22 18:42:55,090 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:55,090 INFO  L276                IsEmpty]: Start isEmpty. Operand 196 states and 224 transitions.
[2024-11-22 18:42:55,090 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2024-11-22 18:42:55,090 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:55,090 INFO  L215           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:55,091 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2024-11-22 18:42:55,091 INFO  L396      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:55,091 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:55,091 INFO  L85        PathProgramCache]: Analyzing trace with hash 447243293, now seen corresponding path program 1 times
[2024-11-22 18:42:55,091 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:55,091 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246238667]
[2024-11-22 18:42:55,091 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:55,091 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:55,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:55,367 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:55,367 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:55,367 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246238667]
[2024-11-22 18:42:55,367 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246238667] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 18:42:55,368 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73767581]
[2024-11-22 18:42:55,368 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:42:55,368 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 18:42:55,368 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 18:42:55,370 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-22 18:42:55,370 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-22 18:42:55,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:42:55,456 INFO  L255         TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 46 conjuncts are in the unsatisfiable core
[2024-11-22 18:42:55,458 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 18:42:55,495 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2024-11-22 18:42:55,501 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2024-11-22 18:42:55,705 INFO  L173   IndexEqualityManager]: detected equality via solver
[2024-11-22 18:42:55,706 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-22 18:42:55,707 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20
[2024-11-22 18:42:55,713 INFO  L173   IndexEqualityManager]: detected equality via solver
[2024-11-22 18:42:55,714 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-22 18:42:55,714 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20
[2024-11-22 18:42:55,763 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-22 18:42:55,763 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14
[2024-11-22 18:42:55,767 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14
[2024-11-22 18:42:55,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:55,891 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 18:42:56,183 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12
[2024-11-22 18:42:56,188 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2024-11-22 18:42:56,195 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12
[2024-11-22 18:42:56,198 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-22 18:42:56,209 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:56,209 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [73767581] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 18:42:56,209 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 18:42:56,209 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 12] total 27
[2024-11-22 18:42:56,209 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991130288]
[2024-11-22 18:42:56,209 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 18:42:56,209 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2024-11-22 18:42:56,209 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:56,210 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2024-11-22 18:42:56,210 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702
[2024-11-22 18:42:56,210 INFO  L87              Difference]: Start difference. First operand 196 states and 224 transitions. Second operand  has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:57,715 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:42:57,715 INFO  L93              Difference]: Finished difference Result 325 states and 379 transitions.
[2024-11-22 18:42:57,715 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2024-11-22 18:42:57,716 INFO  L78                 Accepts]: Start accepts. Automaton has  has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 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 27
[2024-11-22 18:42:57,716 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:42:57,717 INFO  L225             Difference]: With dead ends: 325
[2024-11-22 18:42:57,717 INFO  L226             Difference]: Without dead ends: 325
[2024-11-22 18:42:57,718 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=333, Invalid=2319, Unknown=0, NotChecked=0, Total=2652
[2024-11-22 18:42:57,718 INFO  L432           NwaCegarLoop]: 127 mSDtfsCounter, 443 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-22 18:42:57,718 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1942 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-22 18:42:57,719 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 325 states.
[2024-11-22 18:42:57,721 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 263.
[2024-11-22 18:42:57,721 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 263 states, 216 states have (on average 1.4537037037037037) internal successors, (314), 262 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:57,722 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 314 transitions.
[2024-11-22 18:42:57,722 INFO  L78                 Accepts]: Start accepts. Automaton has 263 states and 314 transitions. Word has length 27
[2024-11-22 18:42:57,722 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:42:57,722 INFO  L471      AbstractCegarLoop]: Abstraction has 263 states and 314 transitions.
[2024-11-22 18:42:57,722 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:42:57,722 INFO  L276                IsEmpty]: Start isEmpty. Operand 263 states and 314 transitions.
[2024-11-22 18:42:57,722 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-11-22 18:42:57,723 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:42:57,723 INFO  L215           NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:42:57,731 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-22 18:42:57,926 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,SelfDestructingSolverStorable20
[2024-11-22 18:42:57,927 INFO  L396      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:42:57,927 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:42:57,927 INFO  L85        PathProgramCache]: Analyzing trace with hash 1691592608, now seen corresponding path program 2 times
[2024-11-22 18:42:57,927 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:42:57,927 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234197734]
[2024-11-22 18:42:57,927 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 18:42:57,927 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:42:57,951 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 18:42:57,951 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 18:42:58,980 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:58,980 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:42:58,980 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234197734]
[2024-11-22 18:42:58,980 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234197734] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 18:42:58,980 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120128567]
[2024-11-22 18:42:58,980 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 18:42:58,980 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 18:42:58,980 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 18:42:58,985 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)
[2024-11-22 18:42:58,986 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-22 18:42:59,073 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 18:42:59,073 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 18:42:59,075 INFO  L255         TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 44 conjuncts are in the unsatisfiable core
[2024-11-22 18:42:59,077 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 18:42:59,103 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-22 18:42:59,156 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2024-11-22 18:42:59,246 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20
[2024-11-22 18:42:59,286 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-22 18:42:59,287 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16
[2024-11-22 18:42:59,352 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-11-22 18:42:59,421 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:59,422 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 18:42:59,776 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15
[2024-11-22 18:42:59,778 INFO  L173   IndexEqualityManager]: detected equality via solver
[2024-11-22 18:42:59,780 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20
[2024-11-22 18:42:59,876 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:42:59,876 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120128567] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 18:42:59,876 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 18:42:59,876 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 12] total 40
[2024-11-22 18:42:59,876 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938995960]
[2024-11-22 18:42:59,877 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 18:42:59,877 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2024-11-22 18:42:59,877 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:42:59,877 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2024-11-22 18:42:59,878 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560
[2024-11-22 18:42:59,878 INFO  L87              Difference]: Start difference. First operand 263 states and 314 transitions. Second operand  has 40 states, 40 states have (on average 2.3) internal successors, (92), 40 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:02,384 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:43:02,385 INFO  L93              Difference]: Finished difference Result 340 states and 403 transitions.
[2024-11-22 18:43:02,385 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. 
[2024-11-22 18:43:02,385 INFO  L78                 Accepts]: Start accepts. Automaton has  has 40 states, 40 states have (on average 2.3) internal successors, (92), 40 states have internal predecessors, (92), 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 36
[2024-11-22 18:43:02,385 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:43:02,386 INFO  L225             Difference]: With dead ends: 340
[2024-11-22 18:43:02,386 INFO  L226             Difference]: Without dead ends: 340
[2024-11-22 18:43:02,387 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=624, Invalid=5382, Unknown=0, NotChecked=0, Total=6006
[2024-11-22 18:43:02,388 INFO  L432           NwaCegarLoop]: 86 mSDtfsCounter, 322 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 3449 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2024-11-22 18:43:02,388 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1825 Invalid, 3489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3449 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2024-11-22 18:43:02,388 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 340 states.
[2024-11-22 18:43:02,391 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 309.
[2024-11-22 18:43:02,391 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 309 states, 262 states have (on average 1.3893129770992367) internal successors, (364), 308 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:02,391 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 364 transitions.
[2024-11-22 18:43:02,392 INFO  L78                 Accepts]: Start accepts. Automaton has 309 states and 364 transitions. Word has length 36
[2024-11-22 18:43:02,392 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:43:02,392 INFO  L471      AbstractCegarLoop]: Abstraction has 309 states and 364 transitions.
[2024-11-22 18:43:02,392 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 40 states, 40 states have (on average 2.3) internal successors, (92), 40 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:02,392 INFO  L276                IsEmpty]: Start isEmpty. Operand 309 states and 364 transitions.
[2024-11-22 18:43:02,392 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-22 18:43:02,392 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:43:02,392 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:43:02,399 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-22 18:43:02,593 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 18:43:02,593 INFO  L396      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:43:02,594 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:43:02,594 INFO  L85        PathProgramCache]: Analyzing trace with hash 899762317, now seen corresponding path program 1 times
[2024-11-22 18:43:02,594 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:43:02,594 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926929597]
[2024-11-22 18:43:02,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:43:02,594 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:43:02,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:43:02,680 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2024-11-22 18:43:02,680 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:43:02,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926929597]
[2024-11-22 18:43:02,680 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926929597] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 18:43:02,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859127686]
[2024-11-22 18:43:02,680 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:43:02,681 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 18:43:02,681 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 18:43:02,682 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-22 18:43:02,690 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-22 18:43:02,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:43:02,786 INFO  L255         TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-22 18:43:02,787 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 18:43:02,956 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-11-22 18:43:02,959 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 18:43:03,197 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-22 18:43:03,197 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859127686] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 18:43:03,197 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 18:43:03,197 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 8] total 12
[2024-11-22 18:43:03,198 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756801769]
[2024-11-22 18:43:03,198 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 18:43:03,198 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-22 18:43:03,199 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:43:03,199 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-22 18:43:03,200 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2024-11-22 18:43:03,200 INFO  L87              Difference]: Start difference. First operand 309 states and 364 transitions. Second operand  has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:03,331 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:43:03,331 INFO  L93              Difference]: Finished difference Result 342 states and 403 transitions.
[2024-11-22 18:43:03,332 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-22 18:43:03,332 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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 37
[2024-11-22 18:43:03,332 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:43:03,333 INFO  L225             Difference]: With dead ends: 342
[2024-11-22 18:43:03,333 INFO  L226             Difference]: Without dead ends: 342
[2024-11-22 18:43:03,333 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2024-11-22 18:43:03,333 INFO  L432           NwaCegarLoop]: 123 mSDtfsCounter, 341 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:43:03,333 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 599 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:43:03,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 342 states.
[2024-11-22 18:43:03,336 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 312.
[2024-11-22 18:43:03,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 312 states, 265 states have (on average 1.3924528301886792) internal successors, (369), 311 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:03,337 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 369 transitions.
[2024-11-22 18:43:03,337 INFO  L78                 Accepts]: Start accepts. Automaton has 312 states and 369 transitions. Word has length 37
[2024-11-22 18:43:03,337 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:43:03,337 INFO  L471      AbstractCegarLoop]: Abstraction has 312 states and 369 transitions.
[2024-11-22 18:43:03,338 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:03,338 INFO  L276                IsEmpty]: Start isEmpty. Operand 312 states and 369 transitions.
[2024-11-22 18:43:03,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2024-11-22 18:43:03,338 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:43:03,338 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:43:03,345 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-22 18:43:03,542 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 18:43:03,543 INFO  L396      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:43:03,543 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:43:03,543 INFO  L85        PathProgramCache]: Analyzing trace with hash 2122833187, now seen corresponding path program 1 times
[2024-11-22 18:43:03,543 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:43:03,543 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918022542]
[2024-11-22 18:43:03,544 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:43:03,544 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:43:03,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:43:03,610 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2024-11-22 18:43:03,610 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:43:03,610 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918022542]
[2024-11-22 18:43:03,610 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918022542] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:43:03,611 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:43:03,611 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-22 18:43:03,611 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879170826]
[2024-11-22 18:43:03,611 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:43:03,613 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-22 18:43:03,613 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:43:03,613 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-22 18:43:03,613 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 18:43:03,614 INFO  L87              Difference]: Start difference. First operand 312 states and 369 transitions. Second operand  has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:03,687 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:43:03,687 INFO  L93              Difference]: Finished difference Result 312 states and 371 transitions.
[2024-11-22 18:43:03,688 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-22 18:43:03,688 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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 38
[2024-11-22 18:43:03,688 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:43:03,689 INFO  L225             Difference]: With dead ends: 312
[2024-11-22 18:43:03,689 INFO  L226             Difference]: Without dead ends: 312
[2024-11-22 18:43:03,689 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 18:43:03,689 INFO  L432           NwaCegarLoop]: 131 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:43:03,689 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 192 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:43:03,690 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 312 states.
[2024-11-22 18:43:03,692 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312.
[2024-11-22 18:43:03,693 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 312 states, 267 states have (on average 1.3895131086142323) internal successors, (371), 311 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:03,693 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 371 transitions.
[2024-11-22 18:43:03,693 INFO  L78                 Accepts]: Start accepts. Automaton has 312 states and 371 transitions. Word has length 38
[2024-11-22 18:43:03,693 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:43:03,693 INFO  L471      AbstractCegarLoop]: Abstraction has 312 states and 371 transitions.
[2024-11-22 18:43:03,694 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:03,694 INFO  L276                IsEmpty]: Start isEmpty. Operand 312 states and 371 transitions.
[2024-11-22 18:43:03,694 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2024-11-22 18:43:03,694 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:43:03,694 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:43:03,694 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2024-11-22 18:43:03,694 INFO  L396      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:43:03,694 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:43:03,694 INFO  L85        PathProgramCache]: Analyzing trace with hash 2122833186, now seen corresponding path program 1 times
[2024-11-22 18:43:03,694 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:43:03,695 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071766989]
[2024-11-22 18:43:03,695 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:43:03,695 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:43:03,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:43:03,747 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2024-11-22 18:43:03,747 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:43:03,747 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071766989]
[2024-11-22 18:43:03,747 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071766989] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 18:43:03,747 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 18:43:03,747 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-22 18:43:03,747 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065437813]
[2024-11-22 18:43:03,747 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 18:43:03,748 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-22 18:43:03,748 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:43:03,748 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-22 18:43:03,748 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 18:43:03,748 INFO  L87              Difference]: Start difference. First operand 312 states and 371 transitions. Second operand  has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:03,803 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:43:03,803 INFO  L93              Difference]: Finished difference Result 310 states and 368 transitions.
[2024-11-22 18:43:03,804 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-22 18:43:03,804 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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 38
[2024-11-22 18:43:03,804 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:43:03,805 INFO  L225             Difference]: With dead ends: 310
[2024-11-22 18:43:03,805 INFO  L226             Difference]: Without dead ends: 310
[2024-11-22 18:43:03,805 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 18:43:03,805 INFO  L432           NwaCegarLoop]: 132 mSDtfsCounter, 3 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 18:43:03,805 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 205 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 18:43:03,806 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 310 states.
[2024-11-22 18:43:03,808 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310.
[2024-11-22 18:43:03,812 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 310 states, 267 states have (on average 1.3782771535580525) internal successors, (368), 309 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:03,812 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 368 transitions.
[2024-11-22 18:43:03,812 INFO  L78                 Accepts]: Start accepts. Automaton has 310 states and 368 transitions. Word has length 38
[2024-11-22 18:43:03,813 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:43:03,813 INFO  L471      AbstractCegarLoop]: Abstraction has 310 states and 368 transitions.
[2024-11-22 18:43:03,813 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:03,813 INFO  L276                IsEmpty]: Start isEmpty. Operand 310 states and 368 transitions.
[2024-11-22 18:43:03,813 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2024-11-22 18:43:03,813 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:43:03,814 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:43:03,814 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2024-11-22 18:43:03,814 INFO  L396      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:43:03,814 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:43:03,814 INFO  L85        PathProgramCache]: Analyzing trace with hash -756843594, now seen corresponding path program 1 times
[2024-11-22 18:43:03,814 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:43:03,814 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568483763]
[2024-11-22 18:43:03,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:43:03,815 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:43:03,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:43:04,394 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:43:04,395 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:43:04,395 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568483763]
[2024-11-22 18:43:04,395 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568483763] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 18:43:04,395 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075592607]
[2024-11-22 18:43:04,395 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:43:04,395 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 18:43:04,395 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 18:43:04,396 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-22 18:43:04,397 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-22 18:43:04,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:43:04,488 INFO  L255         TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-22 18:43:04,489 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 18:43:04,643 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:43:04,643 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 18:43:04,722 INFO  L349             Elim1Store]: treesize reduction 4, result has 63.6 percent of original size
[2024-11-22 18:43:04,723 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25
[2024-11-22 18:43:04,731 INFO  L349             Elim1Store]: treesize reduction 10, result has 9.1 percent of original size
[2024-11-22 18:43:04,731 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12
[2024-11-22 18:43:04,765 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:43:04,766 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075592607] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 18:43:04,766 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 18:43:04,766 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 27
[2024-11-22 18:43:04,766 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506615248]
[2024-11-22 18:43:04,766 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 18:43:04,766 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2024-11-22 18:43:04,766 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 18:43:04,767 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2024-11-22 18:43:04,767 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702
[2024-11-22 18:43:04,767 INFO  L87              Difference]: Start difference. First operand 310 states and 368 transitions. Second operand  has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 27 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:05,846 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 18:43:05,847 INFO  L93              Difference]: Finished difference Result 393 states and 451 transitions.
[2024-11-22 18:43:05,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. 
[2024-11-22 18:43:05,847 INFO  L78                 Accepts]: Start accepts. Automaton has  has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 27 states have internal predecessors, (74), 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 38
[2024-11-22 18:43:05,847 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 18:43:05,849 INFO  L225             Difference]: With dead ends: 393
[2024-11-22 18:43:05,849 INFO  L226             Difference]: Without dead ends: 393
[2024-11-22 18:43:05,849 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=649, Invalid=2431, Unknown=0, NotChecked=0, Total=3080
[2024-11-22 18:43:05,850 INFO  L432           NwaCegarLoop]: 115 mSDtfsCounter, 414 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-22 18:43:05,850 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1399 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-22 18:43:05,851 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 393 states.
[2024-11-22 18:43:05,853 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 310.
[2024-11-22 18:43:05,853 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 310 states, 267 states have (on average 1.3295880149812733) internal successors, (355), 309 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:05,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 355 transitions.
[2024-11-22 18:43:05,854 INFO  L78                 Accepts]: Start accepts. Automaton has 310 states and 355 transitions. Word has length 38
[2024-11-22 18:43:05,854 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 18:43:05,854 INFO  L471      AbstractCegarLoop]: Abstraction has 310 states and 355 transitions.
[2024-11-22 18:43:05,854 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 27 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 18:43:05,855 INFO  L276                IsEmpty]: Start isEmpty. Operand 310 states and 355 transitions.
[2024-11-22 18:43:05,855 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2024-11-22 18:43:05,855 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 18:43:05,855 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 18:43:05,862 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-22 18:43:06,055 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2024-11-22 18:43:06,056 INFO  L396      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] ===
[2024-11-22 18:43:06,056 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 18:43:06,056 INFO  L85        PathProgramCache]: Analyzing trace with hash 734177974, now seen corresponding path program 1 times
[2024-11-22 18:43:06,056 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 18:43:06,057 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769635594]
[2024-11-22 18:43:06,057 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:43:06,057 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 18:43:06,070 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:43:06,409 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:43:06,409 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 18:43:06,409 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769635594]
[2024-11-22 18:43:06,409 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769635594] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 18:43:06,409 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823029427]
[2024-11-22 18:43:06,409 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 18:43:06,409 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 18:43:06,410 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 18:43:06,411 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-22 18:43:06,413 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-22 18:43:06,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 18:43:06,509 INFO  L255         TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 36 conjuncts are in the unsatisfiable core
[2024-11-22 18:43:06,511 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 18:43:06,614 INFO  L349             Elim1Store]: treesize reduction 18, result has 35.7 percent of original size
[2024-11-22 18:43:06,615 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21
[2024-11-22 18:43:06,655 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2024-11-22 18:43:06,664 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2024-11-22 18:43:06,701 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2024-11-22 18:43:06,741 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-22 18:43:06,741 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 33
[2024-11-22 18:43:06,803 INFO  L349             Elim1Store]: treesize reduction 21, result has 19.2 percent of original size
[2024-11-22 18:43:06,804 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41
[2024-11-22 18:43:06,888 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13
[2024-11-22 18:43:06,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 18:43:06,933 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 18:43:06,992 WARN  L851   $PredicateComparison]: unable to prove that (forall ((v_ArrVal_988 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_988) |c_ULTIMATE.start_main_~root~0#1.base|) (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) 1)) is different from false
[2024-11-22 18:43:07,081 WARN  L851   $PredicateComparison]: unable to prove that (forall ((v_ArrVal_988 (Array Int Int)) (|v_ULTIMATE.start_main_#t~mem21#1.offset_12| Int) (v_ArrVal_986 Int)) (let ((.cse0 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (or (< (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~n~0#1.base|) .cse0) |v_ULTIMATE.start_main_#t~mem21#1.offset_12|) (= (select |c_#valid| (select (select (let ((.cse1 (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse0))) (store |c_#memory_$Pointer$#1.base| .cse2 (store (select |c_#memory_$Pointer$#1.base| .cse2) |v_ULTIMATE.start_main_#t~mem21#1.offset_12| v_ArrVal_986))))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~n~0#1.base|) .cse0) v_ArrVal_988)) |c_ULTIMATE.start_main_~root~0#1.base|) (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) 1)))) is different from false
[2024-11-22 18:43:07,118 INFO  L349             Elim1Store]: treesize reduction 19, result has 68.3 percent of original size
[2024-11-22 18:43:07,118 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 104
[2024-11-22 18:43:07,173 INFO  L349             Elim1Store]: treesize reduction 40, result has 50.0 percent of original size
[2024-11-22 18:43:07,173 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 101
[2024-11-22 18:43:07,190 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-22 18:43:07,190 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 70
[2024-11-22 18:43:07,196 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74
[2024-11-22 18:43:07,212 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4
[2024-11-22 18:43:07,241 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4
[2024-11-22 18:43:07,262 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4
[2024-11-22 18:43:07,298 INFO  L349             Elim1Store]: treesize reduction 5, result has 37.5 percent of original size
[2024-11-22 18:43:07,298 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18
[2024-11-22 18:43:07,322 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-22 18:43:07,323 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 58
[2024-11-22 18:43:07,391 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-22 18:43:07,391 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 142 treesize of output 150
[2024-11-22 18:43:10,405 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-22 18:43:10,406 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 228 treesize of output 1558