./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c --full-output --architecture 32bit


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


Checking for ERROR reachability
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/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52eeb5cce5645e9dacc261319eae3d665b5cc432ff3ddd2ef39502a44996e68d
--- Real Ultimate output ---
This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m
[2024-11-22 13:42:36,137 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-22 13:42:36,208 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-22 13:42:36,213 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-22 13:42:36,213 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-22 13:42:36,234 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-22 13:42:36,234 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-22 13:42:36,235 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-22 13:42:36,236 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-22 13:42:36,236 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-22 13:42:36,236 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-22 13:42:36,236 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-22 13:42:36,237 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-22 13:42:36,239 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-22 13:42:36,239 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-22 13:42:36,239 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-22 13:42:36,239 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-22 13:42:36,240 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-22 13:42:36,240 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-22 13:42:36,240 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-22 13:42:36,240 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-22 13:42:36,245 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-22 13:42:36,245 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-22 13:42:36,245 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-22 13:42:36,246 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-22 13:42:36,246 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-22 13:42:36,246 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-22 13:42:36,246 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-22 13:42:36,247 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-22 13:42:36,247 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-22 13:42:36,247 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-22 13:42:36,247 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-22 13:42:36,247 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-22 13:42:36,248 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-22 13:42:36,248 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-22 13:42:36,248 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-22 13:42:36,248 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-22 13:42:36,249 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-22 13:42:36,249 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-22 13:42:36,250 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-22 13:42:36,250 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-22 13:42:36,250 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-22 13:42:36,250 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52eeb5cce5645e9dacc261319eae3d665b5cc432ff3ddd2ef39502a44996e68d
[2024-11-22 13:42:36,536 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-22 13:42:36,563 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-22 13:42:36,566 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-22 13:42:36,567 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-22 13:42:36,568 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-22 13:42:36,569 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c
[2024-11-22 13:42:38,041 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-22 13:42:38,232 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-22 13:42:38,232 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c
[2024-11-22 13:42:38,240 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa86399a/3a1b5799b5a4429dac39a842ded7d50c/FLAGa6e97a962
[2024-11-22 13:42:38,254 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa86399a/3a1b5799b5a4429dac39a842ded7d50c
[2024-11-22 13:42:38,256 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-22 13:42:38,257 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-22 13:42:38,260 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-22 13:42:38,261 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-22 13:42:38,266 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-22 13:42:38,267 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,268 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e41ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38, skipping insertion in model container
[2024-11-22 13:42:38,268 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,290 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-22 13:42:38,468 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c[1875,1888]
[2024-11-22 13:42:38,472 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-22 13:42:38,481 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-22 13:42:38,500 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c[1875,1888]
[2024-11-22 13:42:38,501 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-22 13:42:38,523 INFO  L204         MainTranslator]: Completed translation
[2024-11-22 13:42:38,524 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38 WrapperNode
[2024-11-22 13:42:38,524 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-22 13:42:38,525 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-22 13:42:38,525 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-22 13:42:38,525 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-22 13:42:38,532 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,538 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,552 INFO  L138                Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47
[2024-11-22 13:42:38,552 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-22 13:42:38,553 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-22 13:42:38,553 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-22 13:42:38,553 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-22 13:42:38,563 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,563 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,564 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,576 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-22 13:42:38,577 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,577 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,584 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,587 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,588 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,589 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,591 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-22 13:42:38,592 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-22 13:42:38,592 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-22 13:42:38,592 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-22 13:42:38,593 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (1/1) ...
[2024-11-22 13:42:38,600 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-22 13:42:38,611 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 13:42:38,625 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 13:42:38,627 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 13:42:38,672 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-22 13:42:38,672 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2024-11-22 13:42:38,672 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2024-11-22 13:42:38,672 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2024-11-22 13:42:38,672 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2024-11-22 13:42:38,673 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-22 13:42:38,673 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-22 13:42:38,673 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-22 13:42:38,674 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 13:42:38,765 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-22 13:42:38,767 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-22 13:42:38,966 INFO  L283             CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-22 13:42:38,967 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-22 13:42:39,077 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-22 13:42:39,078 INFO  L316             CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-22 13:42:39,078 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:42:39 BoogieIcfgContainer
[2024-11-22 13:42:39,078 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-22 13:42:39,081 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-22 13:42:39,081 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-22 13:42:39,085 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-22 13:42:39,086 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:42:38" (1/3) ...
[2024-11-22 13:42:39,087 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eca2571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:42:39, skipping insertion in model container
[2024-11-22 13:42:39,087 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:38" (2/3) ...
[2024-11-22 13:42:39,088 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eca2571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:42:39, skipping insertion in model container
[2024-11-22 13:42:39,088 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:42:39" (3/3) ...
[2024-11-22 13:42:39,090 INFO  L112   eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c
[2024-11-22 13:42:39,106 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-22 13:42:39,107 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-22 13:42:39,107 INFO  L489   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-22 13:42:39,159 INFO  L143    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-11-22 13:42:39,189 INFO  L73            FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow
[2024-11-22 13:42:39,217 INFO  L124   PetriNetUnfolderBase]: 2/16 cut-off events.
[2024-11-22 13:42:39,219 INFO  L125   PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-22 13:42:39,222 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. 
[2024-11-22 13:42:39,223 INFO  L82        GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow
[2024-11-22 13:42:39,226 INFO  L88        GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow
[2024-11-22 13:42:39,233 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-22 13:42:39,239 INFO  L333      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b9858e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-22 13:42:39,240 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2024-11-22 13:42:39,248 INFO  L185   PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-22 13:42:39,249 INFO  L124   PetriNetUnfolderBase]: 2/14 cut-off events.
[2024-11-22 13:42:39,249 INFO  L125   PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-22 13:42:39,249 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 13:42:39,250 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 13:42:39,250 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-22 13:42:39,259 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 13:42:39,260 INFO  L85        PathProgramCache]: Analyzing trace with hash -654319000, now seen corresponding path program 1 times
[2024-11-22 13:42:39,268 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 13:42:39,269 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038707416]
[2024-11-22 13:42:39,269 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 13:42:39,269 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 13:42:39,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 13:42:39,552 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 13:42:39,553 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 13:42:39,553 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038707416]
[2024-11-22 13:42:39,554 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038707416] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 13:42:39,554 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 13:42:39,554 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-22 13:42:39,556 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676073037]
[2024-11-22 13:42:39,556 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 13:42:39,564 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-22 13:42:39,569 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 13:42:39,594 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-22 13:42:39,595 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 13:42:39,599 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-11-22 13:42:39,601 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand  has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 13:42:39,601 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 13:42:39,601 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-11-22 13:42:39,602 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 13:42:39,676 INFO  L124   PetriNetUnfolderBase]: 59/104 cut-off events.
[2024-11-22 13:42:39,676 INFO  L125   PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES.
[2024-11-22 13:42:39,677 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 59/104 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 279 event pairs, 8 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. 
[2024-11-22 13:42:39,681 INFO  L140   encePairwiseOnDemand]: 14/18 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions.
[2024-11-22 13:42:39,681 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow
[2024-11-22 13:42:39,683 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-22 13:42:39,685 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-22 13:42:39,693 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions.
[2024-11-22 13:42:39,696 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6851851851851852
[2024-11-22 13:42:39,698 INFO  L175             Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 37 transitions.
[2024-11-22 13:42:39,699 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow
[2024-11-22 13:42:39,701 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-11-22 13:42:39,704 INFO  L231             Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow
[2024-11-22 13:42:39,707 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17}
[2024-11-22 13:42:39,710 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places.
[2024-11-22 13:42:39,711 INFO  L471      AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow
[2024-11-22 13:42:39,711 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 13:42:39,711 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 13:42:39,711 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 13:42:39,711 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-22 13:42:39,712 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-22 13:42:39,712 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 13:42:39,712 INFO  L85        PathProgramCache]: Analyzing trace with hash 892593983, now seen corresponding path program 1 times
[2024-11-22 13:42:39,713 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 13:42:39,713 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033075666]
[2024-11-22 13:42:39,713 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 13:42:39,713 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 13:42:39,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 13:42:39,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 13:42:39,887 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 13:42:39,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033075666]
[2024-11-22 13:42:39,887 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033075666] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 13:42:39,887 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 13:42:39,887 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-22 13:42:39,888 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989262183]
[2024-11-22 13:42:39,888 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 13:42:39,889 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-22 13:42:39,889 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 13:42:39,890 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-22 13:42:39,890 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-22 13:42:39,891 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-11-22 13:42:39,891 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 13:42:39,892 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 13:42:39,892 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-11-22 13:42:39,892 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 13:42:40,002 INFO  L124   PetriNetUnfolderBase]: 57/101 cut-off events.
[2024-11-22 13:42:40,002 INFO  L125   PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES.
[2024-11-22 13:42:40,005 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 252 conditions, 101 events. 57/101 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 245 event pairs, 1 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 72. Up to 38 conditions per place. 
[2024-11-22 13:42:40,007 INFO  L140   encePairwiseOnDemand]: 13/18 looper letters, 22 selfloop transitions, 6 changer transitions 4/35 dead transitions.
[2024-11-22 13:42:40,008 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 35 transitions, 163 flow
[2024-11-22 13:42:40,008 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 13:42:40,009 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-22 13:42:40,010 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions.
[2024-11-22 13:42:40,011 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6444444444444445
[2024-11-22 13:42:40,011 INFO  L175             Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 58 transitions.
[2024-11-22 13:42:40,011 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 35 transitions, 163 flow
[2024-11-22 13:42:40,012 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 35 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-22 13:42:40,014 INFO  L231             Difference]: Finished difference. Result has 23 places, 19 transitions, 74 flow
[2024-11-22 13:42:40,014 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=23, PETRI_TRANSITIONS=19}
[2024-11-22 13:42:40,015 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places.
[2024-11-22 13:42:40,015 INFO  L471      AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 74 flow
[2024-11-22 13:42:40,016 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 13:42:40,016 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 13:42:40,016 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 13:42:40,016 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-22 13:42:40,017 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-22 13:42:40,017 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 13:42:40,018 INFO  L85        PathProgramCache]: Analyzing trace with hash -2113678936, now seen corresponding path program 1 times
[2024-11-22 13:42:40,019 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 13:42:40,019 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373187965]
[2024-11-22 13:42:40,019 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 13:42:40,019 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 13:42:40,042 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 13:42:40,212 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 13:42:40,213 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 13:42:40,213 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373187965]
[2024-11-22 13:42:40,213 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373187965] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 13:42:40,213 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 13:42:40,213 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-22 13:42:40,214 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415220072]
[2024-11-22 13:42:40,214 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 13:42:40,214 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-22 13:42:40,214 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 13:42:40,215 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-22 13:42:40,216 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-22 13:42:40,216 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-11-22 13:42:40,217 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 74 flow. Second operand  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 13:42:40,217 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 13:42:40,220 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-11-22 13:42:40,220 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 13:42:40,321 INFO  L124   PetriNetUnfolderBase]: 51/93 cut-off events.
[2024-11-22 13:42:40,322 INFO  L125   PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES.
[2024-11-22 13:42:40,323 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 273 conditions, 93 events. 51/93 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 222 event pairs, 1 based on Foata normal form. 3/96 useless extension candidates. Maximal degree in co-relation 79. Up to 46 conditions per place. 
[2024-11-22 13:42:40,323 INFO  L140   encePairwiseOnDemand]: 13/18 looper letters, 17 selfloop transitions, 4 changer transitions 7/31 dead transitions.
[2024-11-22 13:42:40,324 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 161 flow
[2024-11-22 13:42:40,325 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 13:42:40,325 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-22 13:42:40,326 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions.
[2024-11-22 13:42:40,326 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6
[2024-11-22 13:42:40,327 INFO  L175             Difference]: Start difference. First operand has 23 places, 19 transitions, 74 flow. Second operand 5 states and 54 transitions.
[2024-11-22 13:42:40,327 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 161 flow
[2024-11-22 13:42:40,328 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-22 13:42:40,329 INFO  L231             Difference]: Finished difference. Result has 26 places, 17 transitions, 68 flow
[2024-11-22 13:42:40,329 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=26, PETRI_TRANSITIONS=17}
[2024-11-22 13:42:40,330 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, 6 predicate places.
[2024-11-22 13:42:40,331 INFO  L471      AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 68 flow
[2024-11-22 13:42:40,331 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 13:42:40,331 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 13:42:40,331 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 13:42:40,332 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-22 13:42:40,333 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-22 13:42:40,333 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 13:42:40,334 INFO  L85        PathProgramCache]: Analyzing trace with hash -1919797381, now seen corresponding path program 2 times
[2024-11-22 13:42:40,334 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 13:42:40,334 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303661969]
[2024-11-22 13:42:40,334 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 13:42:40,334 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 13:42:40,358 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 13:42:40,358 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 13:42:40,451 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 13:42:40,451 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 13:42:40,451 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303661969]
[2024-11-22 13:42:40,451 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303661969] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 13:42:40,451 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144942251]
[2024-11-22 13:42:40,452 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 13:42:40,452 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 13:42:40,452 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 13:42:40,478 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 13:42:40,479 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 13:42:40,530 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 13:42:40,530 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 13:42:40,532 INFO  L255         TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-22 13:42:40,536 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 13:42:40,695 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 13:42:40,695 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 13:42:40,763 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 13:42:40,765 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144942251] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 13:42:40,765 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 13:42:40,765 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5
[2024-11-22 13:42:40,766 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105451046]
[2024-11-22 13:42:40,766 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 13:42:40,767 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-22 13:42:40,767 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 13:42:40,767 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-22 13:42:40,768 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-22 13:42:40,769 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-11-22 13:42:40,769 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 68 flow. Second operand  has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 13:42:40,770 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 13:42:40,770 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-11-22 13:42:40,770 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 13:42:40,881 INFO  L124   PetriNetUnfolderBase]: 41/74 cut-off events.
[2024-11-22 13:42:40,883 INFO  L125   PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES.
[2024-11-22 13:42:40,884 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 232 conditions, 74 events. 41/74 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 147 event pairs, 3 based on Foata normal form. 5/79 useless extension candidates. Maximal degree in co-relation 71. Up to 48 conditions per place. 
[2024-11-22 13:42:40,885 INFO  L140   encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 6 changer transitions 0/29 dead transitions.
[2024-11-22 13:42:40,886 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 155 flow
[2024-11-22 13:42:40,886 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 13:42:40,887 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-22 13:42:40,887 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions.
[2024-11-22 13:42:40,887 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5888888888888889
[2024-11-22 13:42:40,888 INFO  L175             Difference]: Start difference. First operand has 26 places, 17 transitions, 68 flow. Second operand 5 states and 53 transitions.
[2024-11-22 13:42:40,889 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 155 flow
[2024-11-22 13:42:40,889 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 145 flow, removed 2 selfloop flow, removed 2 redundant places.
[2024-11-22 13:42:40,891 INFO  L231             Difference]: Finished difference. Result has 28 places, 20 transitions, 95 flow
[2024-11-22 13:42:40,892 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=28, PETRI_TRANSITIONS=20}
[2024-11-22 13:42:40,892 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, 8 predicate places.
[2024-11-22 13:42:40,893 INFO  L471      AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 95 flow
[2024-11-22 13:42:40,893 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 13:42:40,894 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 13:42:40,894 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 13:42:40,904 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-22 13:42:41,094 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 13:42:41,095 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-22 13:42:41,095 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 13:42:41,095 INFO  L85        PathProgramCache]: Analyzing trace with hash 722300088, now seen corresponding path program 2 times
[2024-11-22 13:42:41,096 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 13:42:41,096 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657290996]
[2024-11-22 13:42:41,096 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 13:42:41,096 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 13:42:41,116 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 13:42:41,117 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 13:42:41,186 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 13:42:41,186 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 13:42:41,187 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657290996]
[2024-11-22 13:42:41,187 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657290996] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 13:42:41,187 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 13:42:41,188 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-22 13:42:41,188 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649972893]
[2024-11-22 13:42:41,188 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 13:42:41,188 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-22 13:42:41,189 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 13:42:41,189 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-22 13:42:41,190 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-22 13:42:41,190 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-11-22 13:42:41,190 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 95 flow. Second operand  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 13:42:41,190 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 13:42:41,191 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-11-22 13:42:41,191 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 13:42:41,285 INFO  L124   PetriNetUnfolderBase]: 37/70 cut-off events.
[2024-11-22 13:42:41,286 INFO  L125   PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES.
[2024-11-22 13:42:41,286 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 257 conditions, 70 events. 37/70 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 2 based on Foata normal form. 4/74 useless extension candidates. Maximal degree in co-relation 121. Up to 55 conditions per place. 
[2024-11-22 13:42:41,290 INFO  L140   encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 6 changer transitions 0/29 dead transitions.
[2024-11-22 13:42:41,293 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 180 flow
[2024-11-22 13:42:41,294 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 13:42:41,294 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-22 13:42:41,295 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions.
[2024-11-22 13:42:41,297 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5555555555555556
[2024-11-22 13:42:41,297 INFO  L175             Difference]: Start difference. First operand has 28 places, 20 transitions, 95 flow. Second operand 5 states and 50 transitions.
[2024-11-22 13:42:41,297 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 180 flow
[2024-11-22 13:42:41,298 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places.
[2024-11-22 13:42:41,301 INFO  L231             Difference]: Finished difference. Result has 33 places, 23 transitions, 131 flow
[2024-11-22 13:42:41,301 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=33, PETRI_TRANSITIONS=23}
[2024-11-22 13:42:41,302 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, 13 predicate places.
[2024-11-22 13:42:41,304 INFO  L471      AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 131 flow
[2024-11-22 13:42:41,304 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 13:42:41,304 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 13:42:41,305 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 13:42:41,305 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-22 13:42:41,305 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-22 13:42:41,305 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 13:42:41,306 INFO  L85        PathProgramCache]: Analyzing trace with hash -1268642375, now seen corresponding path program 1 times
[2024-11-22 13:42:41,306 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 13:42:41,306 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4807726]
[2024-11-22 13:42:41,306 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 13:42:41,308 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 13:42:41,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 13:42:41,787 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 13:42:41,788 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 13:42:41,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4807726]
[2024-11-22 13:42:41,788 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4807726] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 13:42:41,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946226446]
[2024-11-22 13:42:41,789 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 13:42:41,789 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 13:42:41,789 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 13:42:41,791 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 13:42:41,793 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 13:42:41,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 13:42:41,885 INFO  L255         TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-22 13:42:41,886 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 13:43:08,542 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 13:43:08,542 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 13:43:09,286 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 13:43:09,286 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [946226446] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 13:43:09,287 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 13:43:09,287 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14
[2024-11-22 13:43:09,287 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634562522]
[2024-11-22 13:43:09,287 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 13:43:09,287 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-22 13:43:09,288 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 13:43:09,288 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-22 13:43:09,288 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=147, Unknown=2, NotChecked=0, Total=210
[2024-11-22 13:43:09,289 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-11-22 13:43:09,289 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 131 flow. Second operand  has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 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 13:43:09,289 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-22 13:43:09,290 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-11-22 13:43:09,290 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-22 13:43:15,582 INFO  L124   PetriNetUnfolderBase]: 125/239 cut-off events.
[2024-11-22 13:43:15,583 INFO  L125   PetriNetUnfolderBase]: For 454/454 co-relation queries the response was YES.
[2024-11-22 13:43:15,586 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 973 conditions, 239 events. 125/239 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 821 event pairs, 3 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 538. Up to 85 conditions per place. 
[2024-11-22 13:43:15,589 INFO  L140   encePairwiseOnDemand]: 12/18 looper letters, 49 selfloop transitions, 25 changer transitions 14/91 dead transitions.
[2024-11-22 13:43:15,589 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 91 transitions, 651 flow
[2024-11-22 13:43:15,590 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2024-11-22 13:43:15,591 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-11-22 13:43:15,592 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions.
[2024-11-22 13:43:15,592 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6324786324786325
[2024-11-22 13:43:15,592 INFO  L175             Difference]: Start difference. First operand has 33 places, 23 transitions, 131 flow. Second operand 13 states and 148 transitions.
[2024-11-22 13:43:15,593 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 91 transitions, 651 flow
[2024-11-22 13:43:15,599 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 91 transitions, 636 flow, removed 6 selfloop flow, removed 1 redundant places.
[2024-11-22 13:43:15,603 INFO  L231             Difference]: Finished difference. Result has 51 places, 44 transitions, 383 flow
[2024-11-22 13:43:15,603 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=383, PETRI_PLACES=51, PETRI_TRANSITIONS=44}
[2024-11-22 13:43:15,604 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places.
[2024-11-22 13:43:15,604 INFO  L471      AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 383 flow
[2024-11-22 13:43:15,604 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 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 13:43:15,605 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-22 13:43:15,605 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 13:43:15,614 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-22 13:43:15,809 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 13:43:15,810 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-22 13:43:15,811 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 13:43:15,811 INFO  L85        PathProgramCache]: Analyzing trace with hash -856333841, now seen corresponding path program 2 times
[2024-11-22 13:43:15,812 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 13:43:15,812 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063937558]
[2024-11-22 13:43:15,812 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 13:43:15,812 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 13:43:15,851 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 13:43:15,851 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 13:43:16,139 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 13:43:16,139 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 13:43:16,140 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063937558]
[2024-11-22 13:43:16,140 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063937558] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 13:43:16,140 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210265444]
[2024-11-22 13:43:16,140 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 13:43:16,140 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 13:43:16,141 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 13:43:16,143 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 13:43:16,144 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 13:43:16,213 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 13:43:16,213 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 13:43:16,214 INFO  L255         TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-22 13:43:16,215 INFO  L278         TraceCheckSpWp]: Computing forward predicates...