./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.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/goblint-regression/06-symbeq_05-funloop_hard2.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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a
--- Real Ultimate output ---
This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m
[2024-11-22 21:35:47,463 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-22 21:35:47,549 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2024-11-22 21:35:47,553 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-22 21:35:47,554 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-22 21:35:47,588 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-22 21:35:47,589 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-22 21:35:47,589 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-22 21:35:47,590 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-22 21:35:47,592 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-22 21:35:47,592 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-22 21:35:47,592 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-22 21:35:47,593 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-22 21:35:47,594 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-22 21:35:47,595 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-22 21:35:47,595 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-22 21:35:47,595 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-22 21:35:47,596 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-22 21:35:47,596 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-22 21:35:47,596 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-22 21:35:47,596 INFO  L153        SettingsManager]:  * Check for the main procedure if all allocated memory was freed=true
[2024-11-22 21:35:47,597 INFO  L153        SettingsManager]:  * Bitprecise bitfields=true
[2024-11-22 21:35:47,597 INFO  L153        SettingsManager]:  * SV-COMP memtrack compatibility mode=true
[2024-11-22 21:35:47,600 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-22 21:35:47,600 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-22 21:35:47,601 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-22 21:35:47,601 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2024-11-22 21:35:47,601 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-22 21:35:47,601 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-22 21:35:47,601 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-22 21:35:47,602 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-22 21:35:47,602 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-22 21:35:47,602 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-22 21:35:47,602 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-22 21:35:47,602 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-22 21:35:47,603 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-22 21:35:47,603 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-22 21:35:47,603 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-22 21:35:47,603 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-22 21:35:47,604 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-22 21:35:47,604 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-22 21:35:47,605 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-22 21:35:47,605 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 -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a
[2024-11-22 21:35:47,857 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-22 21:35:47,881 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-22 21:35:47,884 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-22 21:35:47,885 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-22 21:35:47,886 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-22 21:35:47,887 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i
[2024-11-22 21:35:49,255 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-22 21:35:49,527 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-22 21:35:49,527 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i
[2024-11-22 21:35:49,547 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348391352/990d9889f7554dcabf780b3fcc932a2f/FLAG48b21a0cf
[2024-11-22 21:35:49,564 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348391352/990d9889f7554dcabf780b3fcc932a2f
[2024-11-22 21:35:49,566 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-22 21:35:49,568 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-22 21:35:49,570 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-22 21:35:49,570 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-22 21:35:49,575 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-22 21:35:49,576 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:35:49" (1/1) ...
[2024-11-22 21:35:49,576 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76de11f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:49, skipping insertion in model container
[2024-11-22 21:35:49,577 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:35:49" (1/1) ...
[2024-11-22 21:35:49,625 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-22 21:35:50,095 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-22 21:35:50,152 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-22 21:35:50,210 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-22 21:35:50,282 INFO  L204         MainTranslator]: Completed translation
[2024-11-22 21:35:50,283 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50 WrapperNode
[2024-11-22 21:35:50,283 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-22 21:35:50,285 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-22 21:35:50,285 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-22 21:35:50,285 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-22 21:35:50,292 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,314 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,347 INFO  L138                Inliner]: procedures = 263, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 143
[2024-11-22 21:35:50,348 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-22 21:35:50,348 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-22 21:35:50,348 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-22 21:35:50,349 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-22 21:35:50,359 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,360 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,368 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,390 INFO  L175           MemorySlicer]: Split 66 memory accesses to 1 slices as follows [66]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 3 writes are split as follows [3].
[2024-11-22 21:35:50,392 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,392 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,402 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,409 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,415 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,419 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,422 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-22 21:35:50,424 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-22 21:35:50,426 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-22 21:35:50,426 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-22 21:35:50,427 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ...
[2024-11-22 21:35:50,436 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-22 21:35:50,447 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 21:35:50,465 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 21:35:50,469 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 21:35:50,521 INFO  L130     BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock
[2024-11-22 21:35:50,521 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-22 21:35:50,521 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-22 21:35:50,521 INFO  L130     BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2024-11-22 21:35:50,522 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-22 21:35:50,523 INFO  L130     BoogieDeclarations]: Found specification of procedure t_fun
[2024-11-22 21:35:50,523 INFO  L138     BoogieDeclarations]: Found implementation of procedure t_fun
[2024-11-22 21:35:50,523 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-22 21:35:50,523 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-22 21:35:50,523 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-22 21:35:50,525 WARN  L207             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-22 21:35:50,649 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-22 21:35:50,651 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-22 21:35:50,955 INFO  L283             CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-22 21:35:50,955 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-22 21:35:51,283 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-22 21:35:51,284 INFO  L316             CfgBuilder]: Removed 3 assume(true) statements.
[2024-11-22 21:35:51,285 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:35:51 BoogieIcfgContainer
[2024-11-22 21:35:51,286 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-22 21:35:51,288 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-22 21:35:51,288 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-22 21:35:51,292 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-22 21:35:51,292 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:35:49" (1/3) ...
[2024-11-22 21:35:51,293 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1802c9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:35:51, skipping insertion in model container
[2024-11-22 21:35:51,293 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (2/3) ...
[2024-11-22 21:35:51,294 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1802c9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:35:51, skipping insertion in model container
[2024-11-22 21:35:51,294 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:35:51" (3/3) ...
[2024-11-22 21:35:51,296 INFO  L112   eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i
[2024-11-22 21:35:51,312 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-22 21:35:51,312 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations.
[2024-11-22 21:35:51,313 INFO  L489   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-22 21:35:51,361 INFO  L143    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-11-22 21:35:51,400 INFO  L73            FinitePrefix]: Start finitePrefix. Operand has 44 places, 43 transitions, 90 flow
[2024-11-22 21:35:51,433 INFO  L124   PetriNetUnfolderBase]: 3/42 cut-off events.
[2024-11-22 21:35:51,434 INFO  L125   PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-22 21:35:51,437 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 122 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. 
[2024-11-22 21:35:51,438 INFO  L82        GeneralOperation]: Start removeDead. Operand has 44 places, 43 transitions, 90 flow
[2024-11-22 21:35:51,442 INFO  L88        GeneralOperation]: Finished RemoveDead, result has has 43 places, 42 transitions, 87 flow
[2024-11-22 21:35:51,455 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-22 21:35:51,463 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;@190fe4ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-22 21:35:51,464 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 18 error locations.
[2024-11-22 21:35:51,472 INFO  L185   PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-22 21:35:51,473 INFO  L124   PetriNetUnfolderBase]: 1/16 cut-off events.
[2024-11-22 21:35:51,473 INFO  L125   PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-22 21:35:51,474 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:35:51,475 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 21:35:51,475 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:35:51,480 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:35:51,481 INFO  L85        PathProgramCache]: Analyzing trace with hash -42604094, now seen corresponding path program 1 times
[2024-11-22 21:35:51,490 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:35:51,491 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820594119]
[2024-11-22 21:35:51,491 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:35:51,491 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:35:51,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:35:51,865 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 21:35:51,865 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:35:51,866 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820594119]
[2024-11-22 21:35:51,869 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820594119] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 21:35:51,873 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 21:35:51,873 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-22 21:35:51,875 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804950508]
[2024-11-22 21:35:51,876 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 21:35:51,894 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-22 21:35:51,903 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:35:51,965 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-22 21:35:51,971 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 21:35:51,973 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43
[2024-11-22 21:35:51,978 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 87 flow. Second operand  has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 21:35:51,978 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:35:51,978 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43
[2024-11-22 21:35:51,979 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:35:52,129 INFO  L124   PetriNetUnfolderBase]: 114/317 cut-off events.
[2024-11-22 21:35:52,130 INFO  L125   PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-22 21:35:52,131 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 551 conditions, 317 events. 114/317 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1617 event pairs, 91 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 536. Up to 229 conditions per place. 
[2024-11-22 21:35:52,136 INFO  L140   encePairwiseOnDemand]: 40/43 looper letters, 25 selfloop transitions, 2 changer transitions 0/43 dead transitions.
[2024-11-22 21:35:52,138 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 143 flow
[2024-11-22 21:35:52,139 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-22 21:35:52,141 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-22 21:35:52,148 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions.
[2024-11-22 21:35:52,150 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6124031007751938
[2024-11-22 21:35:52,152 INFO  L175             Difference]: Start difference. First operand has 43 places, 42 transitions, 87 flow. Second operand 3 states and 79 transitions.
[2024-11-22 21:35:52,153 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 143 flow
[2024-11-22 21:35:52,154 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-22 21:35:52,156 INFO  L231             Difference]: Finished difference. Result has 45 places, 43 transitions, 98 flow
[2024-11-22 21:35:52,158 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=43}
[2024-11-22 21:35:52,163 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places.
[2024-11-22 21:35:52,163 INFO  L471      AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 98 flow
[2024-11-22 21:35:52,164 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 21:35:52,164 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:35:52,164 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 21:35:52,164 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-22 21:35:52,164 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:35:52,165 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:35:52,165 INFO  L85        PathProgramCache]: Analyzing trace with hash -361866624, now seen corresponding path program 1 times
[2024-11-22 21:35:52,165 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:35:52,165 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890281947]
[2024-11-22 21:35:52,166 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:35:52,166 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:35:52,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:35:52,281 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 21:35:52,282 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:35:52,282 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890281947]
[2024-11-22 21:35:52,282 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890281947] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 21:35:52,282 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720112217]
[2024-11-22 21:35:52,282 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:35:52,283 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 21:35:52,283 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 21:35:52,286 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 21:35:52,287 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 21:35:52,396 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:35:52,398 INFO  L255         TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-22 21:35:52,401 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 21:35:52,444 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 21:35:52,444 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 21:35:52,468 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 21:35:52,469 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [720112217] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 21:35:52,469 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 21:35:52,470 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6
[2024-11-22 21:35:52,470 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895450075]
[2024-11-22 21:35:52,471 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 21:35:52,472 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-22 21:35:52,473 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:35:52,473 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-22 21:35:52,474 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-22 21:35:52,474 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43
[2024-11-22 21:35:52,475 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 98 flow. Second operand  has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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 21:35:52,476 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:35:52,476 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43
[2024-11-22 21:35:52,476 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:35:52,624 INFO  L124   PetriNetUnfolderBase]: 114/320 cut-off events.
[2024-11-22 21:35:52,624 INFO  L125   PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-22 21:35:52,626 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 566 conditions, 320 events. 114/320 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1617 event pairs, 91 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 555. Up to 229 conditions per place. 
[2024-11-22 21:35:52,629 INFO  L140   encePairwiseOnDemand]: 40/43 looper letters, 25 selfloop transitions, 5 changer transitions 0/46 dead transitions.
[2024-11-22 21:35:52,629 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 170 flow
[2024-11-22 21:35:52,630 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-22 21:35:52,630 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-22 21:35:52,631 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions.
[2024-11-22 21:35:52,632 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5232558139534884
[2024-11-22 21:35:52,633 INFO  L175             Difference]: Start difference. First operand has 45 places, 43 transitions, 98 flow. Second operand 6 states and 135 transitions.
[2024-11-22 21:35:52,633 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 170 flow
[2024-11-22 21:35:52,634 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 166 flow, removed 1 selfloop flow, removed 1 redundant places.
[2024-11-22 21:35:52,637 INFO  L231             Difference]: Finished difference. Result has 52 places, 46 transitions, 130 flow
[2024-11-22 21:35:52,637 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=52, PETRI_TRANSITIONS=46}
[2024-11-22 21:35:52,638 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places.
[2024-11-22 21:35:52,638 INFO  L471      AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 130 flow
[2024-11-22 21:35:52,639 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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 21:35:52,639 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:35:52,639 INFO  L204   CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 21:35:52,649 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-22 21:35:52,839 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 21:35:52,840 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:35:52,841 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:35:52,841 INFO  L85        PathProgramCache]: Analyzing trace with hash 1948715364, now seen corresponding path program 2 times
[2024-11-22 21:35:52,841 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:35:52,842 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351557306]
[2024-11-22 21:35:52,842 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 21:35:52,842 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:35:52,875 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-22 21:35:52,883 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 21:35:53,084 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-11-22 21:35:53,085 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:35:53,085 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351557306]
[2024-11-22 21:35:53,085 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351557306] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 21:35:53,086 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 21:35:53,086 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-22 21:35:53,086 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563963369]
[2024-11-22 21:35:53,086 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 21:35:53,087 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-22 21:35:53,088 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:35:53,089 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-22 21:35:53,089 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-22 21:35:53,122 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43
[2024-11-22 21:35:53,122 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 130 flow. Second operand  has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 21:35:53,123 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:35:53,123 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43
[2024-11-22 21:35:53,124 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:35:53,333 INFO  L124   PetriNetUnfolderBase]: 226/558 cut-off events.
[2024-11-22 21:35:53,334 INFO  L125   PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-22 21:35:53,335 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 558 events. 226/558 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2836 event pairs, 117 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 1008. Up to 288 conditions per place. 
[2024-11-22 21:35:53,338 INFO  L140   encePairwiseOnDemand]: 34/43 looper letters, 62 selfloop transitions, 4 changer transitions 0/78 dead transitions.
[2024-11-22 21:35:53,338 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 326 flow
[2024-11-22 21:35:53,338 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 21:35:53,339 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-22 21:35:53,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions.
[2024-11-22 21:35:53,340 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6325581395348837
[2024-11-22 21:35:53,340 INFO  L175             Difference]: Start difference. First operand has 52 places, 46 transitions, 130 flow. Second operand 5 states and 136 transitions.
[2024-11-22 21:35:53,341 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 326 flow
[2024-11-22 21:35:53,342 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 312 flow, removed 6 selfloop flow, removed 1 redundant places.
[2024-11-22 21:35:53,343 INFO  L231             Difference]: Finished difference. Result has 55 places, 46 transitions, 138 flow
[2024-11-22 21:35:53,344 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=55, PETRI_TRANSITIONS=46}
[2024-11-22 21:35:53,344 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places.
[2024-11-22 21:35:53,344 INFO  L471      AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 138 flow
[2024-11-22 21:35:53,345 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 21:35:53,345 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:35:53,345 INFO  L204   CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 21:35:53,345 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-22 21:35:53,346 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:35:53,346 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:35:53,346 INFO  L85        PathProgramCache]: Analyzing trace with hash 1948715363, now seen corresponding path program 1 times
[2024-11-22 21:35:53,346 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:35:53,347 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002007169]
[2024-11-22 21:35:53,348 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:35:53,348 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:35:53,364 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:35:53,442 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-11-22 21:35:53,443 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:35:53,443 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002007169]
[2024-11-22 21:35:53,443 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002007169] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 21:35:53,443 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 21:35:53,443 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-22 21:35:53,444 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939340582]
[2024-11-22 21:35:53,444 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 21:35:53,444 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-22 21:35:53,444 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:35:53,445 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-22 21:35:53,445 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-22 21:35:53,469 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43
[2024-11-22 21:35:53,469 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 138 flow. Second operand  has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 21:35:53,470 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:35:53,470 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43
[2024-11-22 21:35:53,470 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:35:53,634 INFO  L124   PetriNetUnfolderBase]: 198/477 cut-off events.
[2024-11-22 21:35:53,657 INFO  L125   PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES.
[2024-11-22 21:35:53,658 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 477 events. 198/477 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2246 event pairs, 39 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 1011. Up to 280 conditions per place. 
[2024-11-22 21:35:53,664 INFO  L140   encePairwiseOnDemand]: 36/43 looper letters, 41 selfloop transitions, 5 changer transitions 0/56 dead transitions.
[2024-11-22 21:35:53,664 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 250 flow
[2024-11-22 21:35:53,664 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-22 21:35:53,664 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-22 21:35:53,665 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions.
[2024-11-22 21:35:53,665 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5697674418604651
[2024-11-22 21:35:53,669 INFO  L175             Difference]: Start difference. First operand has 55 places, 46 transitions, 138 flow. Second operand 4 states and 98 transitions.
[2024-11-22 21:35:53,669 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 250 flow
[2024-11-22 21:35:53,670 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-22 21:35:53,671 INFO  L231             Difference]: Finished difference. Result has 52 places, 42 transitions, 136 flow
[2024-11-22 21:35:53,672 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=52, PETRI_TRANSITIONS=42}
[2024-11-22 21:35:53,672 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places.
[2024-11-22 21:35:53,672 INFO  L471      AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 136 flow
[2024-11-22 21:35:53,676 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 21:35:53,676 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:35:53,676 INFO  L204   CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 21:35:53,677 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-22 21:35:53,677 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:35:53,677 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:35:53,677 INFO  L85        PathProgramCache]: Analyzing trace with hash 1918963906, now seen corresponding path program 1 times
[2024-11-22 21:35:53,677 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:35:53,678 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850243809]
[2024-11-22 21:35:53,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:35:53,678 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:35:53,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:35:53,765 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-11-22 21:35:53,766 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:35:53,766 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850243809]
[2024-11-22 21:35:53,766 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850243809] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 21:35:53,767 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 21:35:53,767 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-22 21:35:53,767 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001734201]
[2024-11-22 21:35:53,767 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 21:35:53,767 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-22 21:35:53,768 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:35:53,768 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-22 21:35:53,768 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-22 21:35:53,803 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43
[2024-11-22 21:35:53,804 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 136 flow. Second operand  has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 21:35:53,804 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:35:53,804 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43
[2024-11-22 21:35:53,804 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:35:53,917 INFO  L124   PetriNetUnfolderBase]: 198/482 cut-off events.
[2024-11-22 21:35:53,918 INFO  L125   PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES.
[2024-11-22 21:35:53,919 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 482 events. 198/482 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2325 event pairs, 104 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 1046. Up to 260 conditions per place. 
[2024-11-22 21:35:53,922 INFO  L140   encePairwiseOnDemand]: 38/43 looper letters, 39 selfloop transitions, 3 changer transitions 0/50 dead transitions.
[2024-11-22 21:35:53,922 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 258 flow
[2024-11-22 21:35:53,922 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-22 21:35:53,922 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-22 21:35:53,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions.
[2024-11-22 21:35:53,924 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5116279069767442
[2024-11-22 21:35:53,924 INFO  L175             Difference]: Start difference. First operand has 52 places, 42 transitions, 136 flow. Second operand 4 states and 88 transitions.
[2024-11-22 21:35:53,925 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 258 flow
[2024-11-22 21:35:53,926 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 240 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-22 21:35:53,928 INFO  L231             Difference]: Finished difference. Result has 50 places, 40 transitions, 128 flow
[2024-11-22 21:35:53,929 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=50, PETRI_TRANSITIONS=40}
[2024-11-22 21:35:53,930 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places.
[2024-11-22 21:35:53,930 INFO  L471      AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 128 flow
[2024-11-22 21:35:53,931 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 21:35:53,931 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:35:53,931 INFO  L204   CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 21:35:53,932 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-22 21:35:53,932 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:35:53,932 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:35:53,935 INFO  L85        PathProgramCache]: Analyzing trace with hash 1918963907, now seen corresponding path program 1 times
[2024-11-22 21:35:53,935 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:35:53,936 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014758669]
[2024-11-22 21:35:53,936 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:35:53,936 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:35:53,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:35:54,023 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 21:35:54,023 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:35:54,024 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014758669]
[2024-11-22 21:35:54,024 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014758669] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 21:35:54,024 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514638313]
[2024-11-22 21:35:54,024 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:35:54,025 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 21:35:54,025 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 21:35:54,027 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 21:35:54,028 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 21:35:54,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:35:54,104 INFO  L255         TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-22 21:35:54,105 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 21:35:54,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 21:35:54,120 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 21:35:54,180 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 21:35:54,180 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [514638313] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 21:35:54,181 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 21:35:54,181 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12
[2024-11-22 21:35:54,181 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500314302]
[2024-11-22 21:35:54,181 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 21:35:54,182 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-22 21:35:54,182 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:35:54,182 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-22 21:35:54,182 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2024-11-22 21:35:54,183 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43
[2024-11-22 21:35:54,183 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 128 flow. Second operand  has 13 states, 13 states have (on average 18.384615384615383) internal successors, (239), 13 states have internal predecessors, (239), 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 21:35:54,184 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:35:54,184 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43
[2024-11-22 21:35:54,184 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:35:54,332 INFO  L124   PetriNetUnfolderBase]: 198/477 cut-off events.
[2024-11-22 21:35:54,333 INFO  L125   PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES.
[2024-11-22 21:35:54,334 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 477 events. 198/477 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2173 event pairs, 169 based on Foata normal form. 6/467 useless extension candidates. Maximal degree in co-relation 1017. Up to 397 conditions per place. 
[2024-11-22 21:35:54,335 INFO  L140   encePairwiseOnDemand]: 40/43 looper letters, 27 selfloop transitions, 11 changer transitions 0/46 dead transitions.
[2024-11-22 21:35:54,336 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 240 flow
[2024-11-22 21:35:54,336 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2024-11-22 21:35:54,336 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2024-11-22 21:35:54,337 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 246 transitions.
[2024-11-22 21:35:54,337 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.47674418604651164
[2024-11-22 21:35:54,337 INFO  L175             Difference]: Start difference. First operand has 50 places, 40 transitions, 128 flow. Second operand 12 states and 246 transitions.
[2024-11-22 21:35:54,337 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 240 flow
[2024-11-22 21:35:54,339 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 46 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-22 21:35:54,340 INFO  L231             Difference]: Finished difference. Result has 64 places, 46 transitions, 206 flow
[2024-11-22 21:35:54,340 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=206, PETRI_PLACES=64, PETRI_TRANSITIONS=46}
[2024-11-22 21:35:54,341 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places.
[2024-11-22 21:35:54,341 INFO  L471      AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 206 flow
[2024-11-22 21:35:54,341 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 18.384615384615383) internal successors, (239), 13 states have internal predecessors, (239), 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 21:35:54,341 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:35:54,341 INFO  L204   CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 21:35:54,351 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 21:35:54,542 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,SelfDestructingSolverStorable5
[2024-11-22 21:35:54,543 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:35:54,543 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:35:54,543 INFO  L85        PathProgramCache]: Analyzing trace with hash 909392707, now seen corresponding path program 2 times
[2024-11-22 21:35:54,544 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:35:54,544 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647790176]
[2024-11-22 21:35:54,544 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 21:35:54,544 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:35:54,565 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-22 21:35:54,565 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 21:35:54,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:35:54,677 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:35:54,677 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647790176]
[2024-11-22 21:35:54,677 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647790176] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 21:35:54,677 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 21:35:54,678 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-22 21:35:54,678 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775239259]
[2024-11-22 21:35:54,678 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 21:35:54,678 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-22 21:35:54,679 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:35:54,679 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-22 21:35:54,679 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-22 21:35:54,717 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43
[2024-11-22 21:35:54,717 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 206 flow. Second operand  has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 21:35:54,718 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:35:54,718 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43
[2024-11-22 21:35:54,718 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:35:54,883 INFO  L124   PetriNetUnfolderBase]: 310/694 cut-off events.
[2024-11-22 21:35:54,883 INFO  L125   PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES.
[2024-11-22 21:35:54,884 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 694 events. 310/694 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3190 event pairs, 172 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 1470. Up to 462 conditions per place. 
[2024-11-22 21:35:54,887 INFO  L140   encePairwiseOnDemand]: 36/43 looper letters, 62 selfloop transitions, 4 changer transitions 0/72 dead transitions.
[2024-11-22 21:35:54,887 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 418 flow
[2024-11-22 21:35:54,888 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 21:35:54,888 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-22 21:35:54,888 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions.
[2024-11-22 21:35:54,889 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5488372093023256
[2024-11-22 21:35:54,889 INFO  L175             Difference]: Start difference. First operand has 64 places, 46 transitions, 206 flow. Second operand 5 states and 118 transitions.
[2024-11-22 21:35:54,889 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 418 flow
[2024-11-22 21:35:54,891 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 370 flow, removed 19 selfloop flow, removed 5 redundant places.
[2024-11-22 21:35:54,892 INFO  L231             Difference]: Finished difference. Result has 65 places, 48 transitions, 184 flow
[2024-11-22 21:35:54,892 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=65, PETRI_TRANSITIONS=48}
[2024-11-22 21:35:54,893 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places.
[2024-11-22 21:35:54,893 INFO  L471      AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 184 flow
[2024-11-22 21:35:54,894 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 21:35:54,894 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:35:54,894 INFO  L204   CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 21:35:54,894 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-22 21:35:54,894 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:35:54,895 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:35:54,895 INFO  L85        PathProgramCache]: Analyzing trace with hash -546771875, now seen corresponding path program 1 times
[2024-11-22 21:35:54,895 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:35:54,895 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198325636]
[2024-11-22 21:35:54,895 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:35:54,896 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:35:54,914 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:35:55,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:35:55,121 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:35:55,121 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198325636]
[2024-11-22 21:35:55,121 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198325636] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 21:35:55,121 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308635959]
[2024-11-22 21:35:55,122 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:35:55,122 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 21:35:55,122 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 21:35:55,124 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 21:35:55,125 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 21:35:55,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:35:55,221 INFO  L255         TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-22 21:35:55,223 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 21:35:55,447 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:35:55,448 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 21:35:55,601 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:35:55,602 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [308635959] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 21:35:55,602 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 21:35:55,602 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12
[2024-11-22 21:35:55,602 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377054108]
[2024-11-22 21:35:55,603 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 21:35:55,603 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-22 21:35:55,603 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:35:55,604 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-22 21:35:55,604 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182
[2024-11-22 21:35:55,814 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43
[2024-11-22 21:35:55,815 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 184 flow. Second operand  has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 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 21:35:55,815 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:35:55,815 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43
[2024-11-22 21:35:55,815 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:35:56,509 INFO  L124   PetriNetUnfolderBase]: 662/1448 cut-off events.
[2024-11-22 21:35:56,509 INFO  L125   PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES.
[2024-11-22 21:35:56,513 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 1448 events. 662/1448 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7063 event pairs, 76 based on Foata normal form. 140/1535 useless extension candidates. Maximal degree in co-relation 3318. Up to 254 conditions per place. 
[2024-11-22 21:35:56,518 INFO  L140   encePairwiseOnDemand]: 35/43 looper letters, 195 selfloop transitions, 12 changer transitions 0/213 dead transitions.
[2024-11-22 21:35:56,519 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 213 transitions, 1082 flow
[2024-11-22 21:35:56,519 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2024-11-22 21:35:56,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2024-11-22 21:35:56,520 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 343 transitions.
[2024-11-22 21:35:56,520 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6647286821705426
[2024-11-22 21:35:56,520 INFO  L175             Difference]: Start difference. First operand has 65 places, 48 transitions, 184 flow. Second operand 12 states and 343 transitions.
[2024-11-22 21:35:56,520 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 213 transitions, 1082 flow
[2024-11-22 21:35:56,522 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 213 transitions, 1060 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-22 21:35:56,525 INFO  L231             Difference]: Finished difference. Result has 80 places, 54 transitions, 259 flow
[2024-11-22 21:35:56,525 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=259, PETRI_PLACES=80, PETRI_TRANSITIONS=54}
[2024-11-22 21:35:56,525 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places.
[2024-11-22 21:35:56,526 INFO  L471      AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 259 flow
[2024-11-22 21:35:56,526 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 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 21:35:56,526 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:35:56,526 INFO  L204   CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 21:35:56,536 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 21:35:56,730 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 21:35:56,730 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:35:56,731 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:35:56,731 INFO  L85        PathProgramCache]: Analyzing trace with hash 1322317096, now seen corresponding path program 1 times
[2024-11-22 21:35:56,731 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:35:56,731 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435430702]
[2024-11-22 21:35:56,731 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:35:56,731 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:35:56,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:35:57,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:35:57,029 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:35:57,029 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435430702]
[2024-11-22 21:35:57,029 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435430702] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 21:35:57,029 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136240684]
[2024-11-22 21:35:57,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:35:57,029 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 21:35:57,030 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 21:35:57,032 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 21:35:57,033 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 21:35:57,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:35:57,127 INFO  L255         TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-22 21:35:57,129 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 21:35:57,342 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:35:57,343 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 21:35:57,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:35:57,501 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [136240684] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 21:35:57,501 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 21:35:57,501 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12
[2024-11-22 21:35:57,501 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294600856]
[2024-11-22 21:35:57,502 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 21:35:57,502 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-22 21:35:57,502 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:35:57,503 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-22 21:35:57,503 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182
[2024-11-22 21:35:57,632 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43
[2024-11-22 21:35:57,632 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 259 flow. Second operand  has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 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 21:35:57,632 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:35:57,632 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43
[2024-11-22 21:35:57,632 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:35:58,347 INFO  L124   PetriNetUnfolderBase]: 1250/2746 cut-off events.
[2024-11-22 21:35:58,347 INFO  L125   PetriNetUnfolderBase]: For 3118/3118 co-relation queries the response was YES.
[2024-11-22 21:35:58,357 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 7323 conditions, 2746 events. 1250/2746 cut-off events. For 3118/3118 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 14937 event pairs, 306 based on Foata normal form. 224/2938 useless extension candidates. Maximal degree in co-relation 7260. Up to 782 conditions per place. 
[2024-11-22 21:35:58,369 INFO  L140   encePairwiseOnDemand]: 35/43 looper letters, 211 selfloop transitions, 12 changer transitions 0/228 dead transitions.
[2024-11-22 21:35:58,370 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 228 transitions, 1729 flow
[2024-11-22 21:35:58,370 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2024-11-22 21:35:58,370 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2024-11-22 21:35:58,371 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 289 transitions.
[2024-11-22 21:35:58,371 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.560077519379845
[2024-11-22 21:35:58,371 INFO  L175             Difference]: Start difference. First operand has 80 places, 54 transitions, 259 flow. Second operand 12 states and 289 transitions.
[2024-11-22 21:35:58,371 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 228 transitions, 1729 flow
[2024-11-22 21:35:58,377 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 228 transitions, 1548 flow, removed 70 selfloop flow, removed 3 redundant places.
[2024-11-22 21:35:58,379 INFO  L231             Difference]: Finished difference. Result has 94 places, 60 transitions, 319 flow
[2024-11-22 21:35:58,379 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=319, PETRI_PLACES=94, PETRI_TRANSITIONS=60}
[2024-11-22 21:35:58,380 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places.
[2024-11-22 21:35:58,380 INFO  L471      AbstractCegarLoop]: Abstraction has has 94 places, 60 transitions, 319 flow
[2024-11-22 21:35:58,380 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 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 21:35:58,380 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:35:58,381 INFO  L204   CegarLoopForPetriNet]: trace histogram [10, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1]
[2024-11-22 21:35:58,389 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-22 21:35:58,584 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 21:35:58,585 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:35:58,585 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:35:58,585 INFO  L85        PathProgramCache]: Analyzing trace with hash 1788139428, now seen corresponding path program 2 times
[2024-11-22 21:35:58,585 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:35:58,585 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469716107]
[2024-11-22 21:35:58,585 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 21:35:58,585 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:35:58,623 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 21:35:58,623 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 21:35:59,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 113 backedges. 21 proven. 37 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:35:59,025 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:35:59,026 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469716107]
[2024-11-22 21:35:59,026 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469716107] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 21:35:59,026 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826191356]
[2024-11-22 21:35:59,026 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 21:35:59,026 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 21:35:59,026 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 21:35:59,029 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 21:35:59,030 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 21:35:59,155 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 21:35:59,155 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 21:35:59,163 INFO  L255         TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-11-22 21:35:59,166 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 21:35:59,539 INFO  L134       CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:35:59,540 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 21:35:59,850 INFO  L134       CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:35:59,850 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [826191356] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 21:35:59,850 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 21:35:59,851 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21
[2024-11-22 21:35:59,851 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052777892]
[2024-11-22 21:35:59,851 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 21:35:59,851 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-22 21:35:59,852 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:35:59,854 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-22 21:35:59,854 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506
[2024-11-22 21:36:00,133 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43
[2024-11-22 21:36:00,134 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 60 transitions, 319 flow. Second operand  has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 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 21:36:00,134 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:36:00,134 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43
[2024-11-22 21:36:00,134 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:36:02,294 INFO  L124   PetriNetUnfolderBase]: 2396/5190 cut-off events.
[2024-11-22 21:36:02,294 INFO  L125   PetriNetUnfolderBase]: For 9480/9480 co-relation queries the response was YES.
[2024-11-22 21:36:02,316 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 14779 conditions, 5190 events. 2396/5190 cut-off events. For 9480/9480 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 29815 event pairs, 0 based on Foata normal form. 456/5646 useless extension candidates. Maximal degree in co-relation 14708. Up to 533 conditions per place. 
[2024-11-22 21:36:02,341 INFO  L140   encePairwiseOnDemand]: 37/43 looper letters, 538 selfloop transitions, 23 changer transitions 22/588 dead transitions.
[2024-11-22 21:36:02,342 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 588 transitions, 4147 flow
[2024-11-22 21:36:02,342 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2024-11-22 21:36:02,342 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2024-11-22 21:36:02,344 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 699 transitions.
[2024-11-22 21:36:02,345 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6773255813953488
[2024-11-22 21:36:02,345 INFO  L175             Difference]: Start difference. First operand has 94 places, 60 transitions, 319 flow. Second operand 24 states and 699 transitions.
[2024-11-22 21:36:02,345 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 588 transitions, 4147 flow
[2024-11-22 21:36:02,364 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 588 transitions, 3742 flow, removed 154 selfloop flow, removed 7 redundant places.
[2024-11-22 21:36:02,368 INFO  L231             Difference]: Finished difference. Result has 115 places, 69 transitions, 411 flow
[2024-11-22 21:36:02,369 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=411, PETRI_PLACES=115, PETRI_TRANSITIONS=69}
[2024-11-22 21:36:02,369 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places.
[2024-11-22 21:36:02,370 INFO  L471      AbstractCegarLoop]: Abstraction has has 115 places, 69 transitions, 411 flow
[2024-11-22 21:36:02,370 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 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 21:36:02,370 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:36:02,370 INFO  L204   CegarLoopForPetriNet]: trace histogram [10, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1]
[2024-11-22 21:36:02,380 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 21:36:02,571 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,SelfDestructingSolverStorable9
[2024-11-22 21:36:02,571 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:36:02,572 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:36:02,572 INFO  L85        PathProgramCache]: Analyzing trace with hash -1751442429, now seen corresponding path program 2 times
[2024-11-22 21:36:02,572 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:36:02,573 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923396947]
[2024-11-22 21:36:02,573 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 21:36:02,573 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:36:02,616 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 21:36:02,616 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 21:36:03,009 INFO  L134       CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:36:03,010 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:36:03,010 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923396947]
[2024-11-22 21:36:03,011 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923396947] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 21:36:03,011 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410846857]
[2024-11-22 21:36:03,011 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 21:36:03,011 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 21:36:03,011 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 21:36:03,014 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 21:36:03,016 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 21:36:03,148 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 21:36:03,148 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 21:36:03,150 INFO  L255         TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-22 21:36:03,153 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 21:36:03,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 113 backedges. 46 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:36:03,589 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 21:36:04,101 INFO  L134       CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2024-11-22 21:36:04,102 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410846857] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 21:36:04,102 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 21:36:04,102 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21
[2024-11-22 21:36:04,104 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214623913]
[2024-11-22 21:36:04,105 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 21:36:04,105 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-22 21:36:04,106 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:36:04,106 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-22 21:36:04,106 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506
[2024-11-22 21:36:04,368 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43
[2024-11-22 21:36:04,370 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 69 transitions, 411 flow. Second operand  has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 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 21:36:04,370 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:36:04,370 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43
[2024-11-22 21:36:04,370 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:36:06,003 INFO  L124   PetriNetUnfolderBase]: 2711/5946 cut-off events.
[2024-11-22 21:36:06,004 INFO  L125   PetriNetUnfolderBase]: For 11939/11939 co-relation queries the response was YES.
[2024-11-22 21:36:06,032 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 17492 conditions, 5946 events. 2711/5946 cut-off events. For 11939/11939 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 36017 event pairs, 0 based on Foata normal form. 189/6135 useless extension candidates. Maximal degree in co-relation 17418. Up to 945 conditions per place. 
[2024-11-22 21:36:06,063 INFO  L140   encePairwiseOnDemand]: 37/43 looper letters, 407 selfloop transitions, 14 changer transitions 0/425 dead transitions.
[2024-11-22 21:36:06,064 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 425 transitions, 3833 flow
[2024-11-22 21:36:06,064 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2024-11-22 21:36:06,064 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2024-11-22 21:36:06,066 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 349 transitions.
[2024-11-22 21:36:06,066 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5410852713178295
[2024-11-22 21:36:06,066 INFO  L175             Difference]: Start difference. First operand has 115 places, 69 transitions, 411 flow. Second operand 15 states and 349 transitions.
[2024-11-22 21:36:06,066 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 425 transitions, 3833 flow
[2024-11-22 21:36:06,087 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 425 transitions, 3264 flow, removed 169 selfloop flow, removed 14 redundant places.
[2024-11-22 21:36:06,090 INFO  L231             Difference]: Finished difference. Result has 114 places, 70 transitions, 391 flow
[2024-11-22 21:36:06,090 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=391, PETRI_PLACES=114, PETRI_TRANSITIONS=70}
[2024-11-22 21:36:06,091 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places.
[2024-11-22 21:36:06,091 INFO  L471      AbstractCegarLoop]: Abstraction has has 114 places, 70 transitions, 391 flow
[2024-11-22 21:36:06,091 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 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 21:36:06,091 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 21:36:06,091 INFO  L204   CegarLoopForPetriNet]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 21:36:06,098 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-22 21:36:06,292 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 21:36:06,292 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-11-22 21:36:06,293 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 21:36:06,293 INFO  L85        PathProgramCache]: Analyzing trace with hash 237533891, now seen corresponding path program 1 times
[2024-11-22 21:36:06,293 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 21:36:06,293 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566392879]
[2024-11-22 21:36:06,293 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 21:36:06,293 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 21:36:06,331 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 21:36:06,395 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked.
[2024-11-22 21:36:06,396 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 21:36:06,396 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566392879]
[2024-11-22 21:36:06,396 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566392879] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 21:36:06,396 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 21:36:06,396 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-11-22 21:36:06,396 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748485342]
[2024-11-22 21:36:06,396 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 21:36:06,397 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-22 21:36:06,397 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 21:36:06,397 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-22 21:36:06,398 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 21:36:06,409 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43
[2024-11-22 21:36:06,410 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 70 transitions, 391 flow. Second operand  has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 21:36:06,410 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 21:36:06,410 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43
[2024-11-22 21:36:06,410 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 21:36:07,029 INFO  L124   PetriNetUnfolderBase]: 2711/5874 cut-off events.
[2024-11-22 21:36:07,029 INFO  L125   PetriNetUnfolderBase]: For 9430/9430 co-relation queries the response was YES.
[2024-11-22 21:36:07,054 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 17207 conditions, 5874 events. 2711/5874 cut-off events. For 9430/9430 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 35173 event pairs, 2604 based on Foata normal form. 63/5936 useless extension candidates. Maximal degree in co-relation 17136. Up to 5432 conditions per place. 
[2024-11-22 21:36:07,059 INFO  L140   encePairwiseOnDemand]: 41/43 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions.
[2024-11-22 21:36:07,060 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 69 transitions, 521 flow
[2024-11-22 21:36:07,060 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-22 21:36:07,060 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-22 21:36:07,060 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions.
[2024-11-22 21:36:07,060 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5736434108527132
[2024-11-22 21:36:07,061 INFO  L175             Difference]: Start difference. First operand has 114 places, 70 transitions, 391 flow. Second operand 3 states and 74 transitions.
[2024-11-22 21:36:07,061 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 69 transitions, 521 flow
[2024-11-22 21:36:07,083 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 69 transitions, 496 flow, removed 3 selfloop flow, removed 10 redundant places.
[2024-11-22 21:36:07,084 INFO  L231             Difference]: Finished difference. Result has 105 places, 0 transitions, 0 flow
[2024-11-22 21:36:07,084 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=105, PETRI_TRANSITIONS=0}
[2024-11-22 21:36:07,084 INFO  L277   CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places.
[2024-11-22 21:36:07,085 INFO  L471      AbstractCegarLoop]: Abstraction has has 105 places, 0 transitions, 0 flow
[2024-11-22 21:36:07,085 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 21:36:07,087 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining)
[2024-11-22 21:36:07,088 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining)
[2024-11-22 21:36:07,088 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining)
[2024-11-22 21:36:07,088 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining)
[2024-11-22 21:36:07,088 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining)
[2024-11-22 21:36:07,088 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining)
[2024-11-22 21:36:07,088 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining)
[2024-11-22 21:36:07,088 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining)
[2024-11-22 21:36:07,088 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining)
[2024-11-22 21:36:07,089 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining)
[2024-11-22 21:36:07,089 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining)
[2024-11-22 21:36:07,089 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining)
[2024-11-22 21:36:07,089 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining)
[2024-11-22 21:36:07,089 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining)
[2024-11-22 21:36:07,089 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining)
[2024-11-22 21:36:07,089 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining)
[2024-11-22 21:36:07,089 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining)
[2024-11-22 21:36:07,089 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining)
[2024-11-22 21:36:07,089 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-11-22 21:36:07,090 INFO  L407         BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1]
[2024-11-22 21:36:07,095 INFO  L239   ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2024-11-22 21:36:07,095 INFO  L170   ceAbstractionStarter]: Computing trace abstraction results
[2024-11-22 21:36:07,099 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:36:07 BasicIcfg
[2024-11-22 21:36:07,099 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-22 21:36:07,100 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-22 21:36:07,100 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2024-11-22 21:36:07,100 INFO  L274        PluginConnector]: Witness Printer initialized
[2024-11-22 21:36:07,101 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:35:51" (3/4) ...
[2024-11-22 21:36:07,102 INFO  L142         WitnessPrinter]: Generating witness for correct program
[2024-11-22 21:36:07,106 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun
[2024-11-22 21:36:07,113 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 83 nodes and edges
[2024-11-22 21:36:07,113 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges
[2024-11-22 21:36:07,113 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2024-11-22 21:36:07,113 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-11-22 21:36:07,193 INFO  L149         WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2024-11-22 21:36:07,194 INFO  L149         WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml
[2024-11-22 21:36:07,194 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-22 21:36:07,195 INFO  L158              Benchmark]: Toolchain (without parser) took 17627.14ms. Allocated memory was 161.5MB in the beginning and 461.4MB in the end (delta: 299.9MB). Free memory was 128.2MB in the beginning and 127.9MB in the end (delta: 270.1kB). Peak memory consumption was 299.0MB. Max. memory is 16.1GB.
[2024-11-22 21:36:07,195 INFO  L158              Benchmark]: CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-22 21:36:07,195 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 714.22ms. Allocated memory is still 161.5MB. Free memory was 128.2MB in the beginning and 95.8MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB.
[2024-11-22 21:36:07,195 INFO  L158              Benchmark]: Boogie Procedure Inliner took 63.04ms. Allocated memory is still 161.5MB. Free memory was 95.8MB in the beginning and 92.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-11-22 21:36:07,196 INFO  L158              Benchmark]: Boogie Preprocessor took 74.74ms. Allocated memory is still 161.5MB. Free memory was 92.5MB in the beginning and 89.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-22 21:36:07,196 INFO  L158              Benchmark]: RCFGBuilder took 861.95ms. Allocated memory is still 161.5MB. Free memory was 89.5MB in the beginning and 92.0MB in the end (delta: -2.5MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB.
[2024-11-22 21:36:07,196 INFO  L158              Benchmark]: TraceAbstraction took 15811.83ms. Allocated memory was 161.5MB in the beginning and 461.4MB in the end (delta: 299.9MB). Free memory was 90.9MB in the beginning and 133.2MB in the end (delta: -42.2MB). Peak memory consumption was 316.4MB. Max. memory is 16.1GB.
[2024-11-22 21:36:07,196 INFO  L158              Benchmark]: Witness Printer took 94.28ms. Allocated memory is still 461.4MB. Free memory was 133.2MB in the beginning and 127.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-11-22 21:36:07,198 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 714.22ms. Allocated memory is still 161.5MB. Free memory was 128.2MB in the beginning and 95.8MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 63.04ms. Allocated memory is still 161.5MB. Free memory was 95.8MB in the beginning and 92.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 74.74ms. Allocated memory is still 161.5MB. Free memory was 92.5MB in the beginning and 89.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * RCFGBuilder took 861.95ms. Allocated memory is still 161.5MB. Free memory was 89.5MB in the beginning and 92.0MB in the end (delta: -2.5MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB.
 * TraceAbstraction took 15811.83ms. Allocated memory was 161.5MB in the beginning and 461.4MB in the end (delta: 299.9MB). Free memory was 90.9MB in the beginning and 133.2MB in the end (delta: -42.2MB). Peak memory consumption was 316.4MB. Max. memory is 16.1GB.
 * Witness Printer took 94.28ms. Allocated memory is still 461.4MB. Free memory was 133.2MB in the beginning and 127.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 931]: all allocated memory was freed
    For all program executions holds that all allocated memory was freed at this location
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: -1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
    CFG has 3 procedures, 55 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.7s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2726 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2597 mSDsluCounter, 454 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 450 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6141 IncrementalHoareTripleChecker+Invalid, 6204 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 4 mSDtfsCounter, 6141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=411occurred in iteration=10, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 445 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 584 ConstructedInterpolants, 0 QuantifiedInterpolants, 6941 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1779 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 984/1280 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    13 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2024-11-22 21:36:07,215 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE