./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 3289d67d
Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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.fs.icfgbuilder-eval-3289d67-m
[2024-11-16 19:22:33,718 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-16 19:22:33,789 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-16 19:22:33,794 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-16 19:22:33,795 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-16 19:22:33,815 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-16 19:22:33,815 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-16 19:22:33,815 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-16 19:22:33,816 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-16 19:22:33,816 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-16 19:22:33,816 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-16 19:22:33,816 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-16 19:22:33,817 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-16 19:22:33,818 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-16 19:22:33,818 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-16 19:22:33,819 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-16 19:22:33,820 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-16 19:22:33,821 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-16 19:22:33,821 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-16 19:22:33,822 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-16 19:22:33,822 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-16 19:22:33,822 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-16 19:22:33,822 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-16 19:22:33,822 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-16 19:22:33,823 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-16 19:22:33,823 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-16 19:22:33,823 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-16 19:22:33,823 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-16 19:22:33,823 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-16 19:22:33,823 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-16 19:22:33,824 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-16 19:22:33,824 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-16 19:22:33,824 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-16 19:22:33,824 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-16 19:22:33,824 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-16 19:22:33,824 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-16 19:22:33,825 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-16 19:22:33,825 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-16 19:22:33,825 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-16 19:22:33,826 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-16 19:22:33,826 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-16 19:22:33,826 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-16 19:22:33,827 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
[2024-11-16 19:22:34,006 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-16 19:22:34,024 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-16 19:22:34,027 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-16 19:22:34,028 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-16 19:22:34,028 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-16 19:22:34,029 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c
[2024-11-16 19:22:35,222 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-16 19:22:35,383 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-16 19:22:35,384 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c
[2024-11-16 19:22:35,392 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cd6ec660/2c8952dec08244db8bed287b353b5ea6/FLAG165036569
[2024-11-16 19:22:35,409 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cd6ec660/2c8952dec08244db8bed287b353b5ea6
[2024-11-16 19:22:35,412 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-16 19:22:35,413 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-16 19:22:35,416 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-16 19:22:35,416 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-16 19:22:35,421 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-16 19:22:35,421 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,422 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eeebbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35, skipping insertion in model container
[2024-11-16 19:22:35,422 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,441 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-16 19:22:35,634 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]
[2024-11-16 19:22:35,637 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-16 19:22:35,643 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-16 19:22:35,655 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]
[2024-11-16 19:22:35,655 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-16 19:22:35,670 INFO  L204         MainTranslator]: Completed translation
[2024-11-16 19:22:35,671 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35 WrapperNode
[2024-11-16 19:22:35,671 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-16 19:22:35,672 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-16 19:22:35,672 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-16 19:22:35,672 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-16 19:22:35,677 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,682 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,695 INFO  L138                Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47
[2024-11-16 19:22:35,695 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-16 19:22:35,696 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-16 19:22:35,696 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-16 19:22:35,696 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-16 19:22:35,704 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,704 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,705 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,714 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].
[2024-11-16 19:22:35,715 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,715 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,717 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,717 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,718 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,718 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,720 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-16 19:22:35,720 INFO  L112        PluginConnector]: ------------------------IcfgBuilder----------------------------
[2024-11-16 19:22:35,720 INFO  L270        PluginConnector]: Initializing IcfgBuilder...
[2024-11-16 19:22:35,720 INFO  L274        PluginConnector]: IcfgBuilder initialized
[2024-11-16 19:22:35,721 INFO  L184        PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (1/1) ...
[2024-11-16 19:22:35,725 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-16 19:22:35,734 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-16 19:22:35,750 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)
[2024-11-16 19:22:35,752 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
[2024-11-16 19:22:35,783 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-16 19:22:35,784 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2024-11-16 19:22:35,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2024-11-16 19:22:35,784 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2024-11-16 19:22:35,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2024-11-16 19:22:35,784 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-16 19:22:35,784 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-16 19:22:35,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-16 19:22:35,786 WARN  L225             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-16 19:22:35,860 INFO  L256             CfgBuilder]: Building ICFG
[2024-11-16 19:22:35,862 INFO  L286             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-16 19:22:35,998 INFO  L303             CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-16 19:22:35,999 INFO  L307             CfgBuilder]: Performing block encoding
[2024-11-16 19:22:36,097 INFO  L331             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-16 19:22:36,097 INFO  L336             CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-16 19:22:36,098 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:22:36 BoogieIcfgContainer
[2024-11-16 19:22:36,098 INFO  L131        PluginConnector]: ------------------------ END IcfgBuilder----------------------------
[2024-11-16 19:22:36,099 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-16 19:22:36,099 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-16 19:22:36,102 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-16 19:22:36,102 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:22:35" (1/3) ...
[2024-11-16 19:22:36,103 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f8787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:22:36, skipping insertion in model container
[2024-11-16 19:22:36,103 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:35" (2/3) ...
[2024-11-16 19:22:36,103 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f8787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:22:36, skipping insertion in model container
[2024-11-16 19:22:36,103 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:22:36" (3/3) ...
[2024-11-16 19:22:36,106 INFO  L112   eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c
[2024-11-16 19:22:36,118 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-16 19:22:36,118 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-16 19:22:36,118 INFO  L489   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-16 19:22:36,155 INFO  L143    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-11-16 19:22:36,178 INFO  L73            FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 62 flow
[2024-11-16 19:22:36,201 INFO  L124   PetriNetUnfolderBase]: 4/22 cut-off events.
[2024-11-16 19:22:36,204 INFO  L125   PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-16 19:22:36,206 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 4/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. 
[2024-11-16 19:22:36,206 INFO  L82        GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 62 flow
[2024-11-16 19:22:36,210 INFO  L88        GeneralOperation]: Finished RemoveDead, result has has 24 places, 21 transitions, 54 flow
[2024-11-16 19:22:36,220 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-16 19:22:36,227 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;@4712c250, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-16 19:22:36,228 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2024-11-16 19:22:36,239 INFO  L185   PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-16 19:22:36,242 INFO  L124   PetriNetUnfolderBase]: 4/20 cut-off events.
[2024-11-16 19:22:36,242 INFO  L125   PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-16 19:22:36,242 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-16 19:22:36,243 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-16 19:22:36,243 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-16 19:22:36,247 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-16 19:22:36,248 INFO  L85        PathProgramCache]: Analyzing trace with hash -654106410, now seen corresponding path program 1 times
[2024-11-16 19:22:36,255 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-16 19:22:36,256 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456147856]
[2024-11-16 19:22:36,256 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-16 19:22:36,256 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-16 19:22:36,331 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-16 19:22:36,379 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-16 19:22:36,379 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-16 19:22:36,379 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456147856]
[2024-11-16 19:22:36,380 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456147856] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-16 19:22:36,380 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-16 19:22:36,380 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-16 19:22:36,381 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352293713]
[2024-11-16 19:22:36,381 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-16 19:22:36,387 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-16 19:22:36,390 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-16 19:22:36,406 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-16 19:22:36,407 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-16 19:22:36,408 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 9 out of 24
[2024-11-16 19:22:36,409 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 54 flow. Second operand  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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)
[2024-11-16 19:22:36,409 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-16 19:22:36,409 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 24
[2024-11-16 19:22:36,410 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-16 19:22:36,448 INFO  L124   PetriNetUnfolderBase]: 40/87 cut-off events.
[2024-11-16 19:22:36,449 INFO  L125   PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES.
[2024-11-16 19:22:36,449 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 169 conditions, 87 events. 40/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 262 event pairs, 16 based on Foata normal form. 23/94 useless extension candidates. Maximal degree in co-relation 136. Up to 67 conditions per place. 
[2024-11-16 19:22:36,451 INFO  L140   encePairwiseOnDemand]: 22/24 looper letters, 12 selfloop transitions, 0 changer transitions 0/19 dead transitions.
[2024-11-16 19:22:36,451 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 74 flow
[2024-11-16 19:22:36,452 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-16 19:22:36,454 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2024-11-16 19:22:36,458 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions.
[2024-11-16 19:22:36,459 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6666666666666666
[2024-11-16 19:22:36,460 INFO  L175             Difference]: Start difference. First operand has 24 places, 21 transitions, 54 flow. Second operand 2 states and 32 transitions.
[2024-11-16 19:22:36,461 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 74 flow
[2024-11-16 19:22:36,463 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-11-16 19:22:36,463 INFO  L231             Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow
[2024-11-16 19:22:36,465 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19}
[2024-11-16 19:22:36,468 INFO  L277   CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places.
[2024-11-16 19:22:36,469 INFO  L471      AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow
[2024-11-16 19:22:36,469 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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)
[2024-11-16 19:22:36,469 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-16 19:22:36,469 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-16 19:22:36,469 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-16 19:22:36,469 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-16 19:22:36,470 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-16 19:22:36,470 INFO  L85        PathProgramCache]: Analyzing trace with hash -372888996, now seen corresponding path program 1 times
[2024-11-16 19:22:36,470 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-16 19:22:36,470 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220044895]
[2024-11-16 19:22:36,470 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-16 19:22:36,471 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-16 19:22:36,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-16 19:22:36,655 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-16 19:22:36,655 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-16 19:22:36,655 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220044895]
[2024-11-16 19:22:36,655 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220044895] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-16 19:22:36,655 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-16 19:22:36,655 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-16 19:22:36,656 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017651709]
[2024-11-16 19:22:36,656 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-16 19:22:36,656 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-16 19:22:36,657 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-16 19:22:36,657 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-16 19:22:36,657 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-16 19:22:36,662 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 9 out of 24
[2024-11-16 19:22:36,662 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 42 flow. Second operand  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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)
[2024-11-16 19:22:36,662 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-16 19:22:36,663 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 24
[2024-11-16 19:22:36,663 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-16 19:22:36,708 INFO  L124   PetriNetUnfolderBase]: 59/136 cut-off events.
[2024-11-16 19:22:36,708 INFO  L125   PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2024-11-16 19:22:36,709 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 244 conditions, 136 events. 59/136 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 500 event pairs, 8 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 241. Up to 77 conditions per place. 
[2024-11-16 19:22:36,710 INFO  L140   encePairwiseOnDemand]: 20/24 looper letters, 17 selfloop transitions, 3 changer transitions 1/28 dead transitions.
[2024-11-16 19:22:36,710 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 105 flow
[2024-11-16 19:22:36,710 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-16 19:22:36,711 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-16 19:22:36,711 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions.
[2024-11-16 19:22:36,712 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6805555555555556
[2024-11-16 19:22:36,712 INFO  L175             Difference]: Start difference. First operand has 21 places, 19 transitions, 42 flow. Second operand 3 states and 49 transitions.
[2024-11-16 19:22:36,712 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 105 flow
[2024-11-16 19:22:36,712 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 105 flow, removed 0 selfloop flow, removed 0 redundant places.
[2024-11-16 19:22:36,714 INFO  L231             Difference]: Finished difference. Result has 24 places, 21 transitions, 61 flow
[2024-11-16 19:22:36,714 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=24, PETRI_TRANSITIONS=21}
[2024-11-16 19:22:36,715 INFO  L277   CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places.
[2024-11-16 19:22:36,715 INFO  L471      AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 61 flow
[2024-11-16 19:22:36,715 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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)
[2024-11-16 19:22:36,715 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-16 19:22:36,715 INFO  L204   CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-16 19:22:36,715 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-16 19:22:36,716 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-16 19:22:36,716 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-16 19:22:36,716 INFO  L85        PathProgramCache]: Analyzing trace with hash 358228063, now seen corresponding path program 1 times
[2024-11-16 19:22:36,716 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-16 19:22:36,716 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424696365]
[2024-11-16 19:22:36,717 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-16 19:22:36,717 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-16 19:22:36,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-16 19:22:36,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-16 19:22:36,816 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-16 19:22:36,816 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424696365]
[2024-11-16 19:22:36,816 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424696365] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-16 19:22:36,816 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-16 19:22:36,816 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-16 19:22:36,817 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46932143]
[2024-11-16 19:22:36,817 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-16 19:22:36,817 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-16 19:22:36,817 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-16 19:22:36,818 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-16 19:22:36,818 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-16 19:22:36,821 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24
[2024-11-16 19:22:36,821 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 61 flow. Second operand  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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)
[2024-11-16 19:22:36,821 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-16 19:22:36,822 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24
[2024-11-16 19:22:36,822 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-16 19:22:36,937 INFO  L124   PetriNetUnfolderBase]: 101/190 cut-off events.
[2024-11-16 19:22:36,937 INFO  L125   PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES.
[2024-11-16 19:22:36,938 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 430 conditions, 190 events. 101/190 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 659 event pairs, 6 based on Foata normal form. 4/188 useless extension candidates. Maximal degree in co-relation 425. Up to 74 conditions per place. 
[2024-11-16 19:22:36,939 INFO  L140   encePairwiseOnDemand]: 19/24 looper letters, 26 selfloop transitions, 6 changer transitions 5/42 dead transitions.
[2024-11-16 19:22:36,943 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 42 transitions, 187 flow
[2024-11-16 19:22:36,943 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-16 19:22:36,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-16 19:22:36,944 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions.
[2024-11-16 19:22:36,944 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6083333333333333
[2024-11-16 19:22:36,944 INFO  L175             Difference]: Start difference. First operand has 24 places, 21 transitions, 61 flow. Second operand 5 states and 73 transitions.
[2024-11-16 19:22:36,944 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 42 transitions, 187 flow
[2024-11-16 19:22:36,945 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-16 19:22:36,946 INFO  L231             Difference]: Finished difference. Result has 28 places, 23 transitions, 82 flow
[2024-11-16 19:22:36,946 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=23}
[2024-11-16 19:22:36,946 INFO  L277   CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places.
[2024-11-16 19:22:36,946 INFO  L471      AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 82 flow
[2024-11-16 19:22:36,946 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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)
[2024-11-16 19:22:36,947 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-16 19:22:36,947 INFO  L204   CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-16 19:22:36,947 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-16 19:22:36,947 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-16 19:22:36,947 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-16 19:22:36,948 INFO  L85        PathProgramCache]: Analyzing trace with hash 342011777, now seen corresponding path program 2 times
[2024-11-16 19:22:36,948 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-16 19:22:36,948 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385928996]
[2024-11-16 19:22:36,948 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-16 19:22:36,948 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-16 19:22:36,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-16 19:22:37,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-16 19:22:37,026 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-16 19:22:37,026 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385928996]
[2024-11-16 19:22:37,028 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385928996] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-16 19:22:37,029 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-16 19:22:37,029 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-16 19:22:37,029 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721954179]
[2024-11-16 19:22:37,029 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-16 19:22:37,029 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-16 19:22:37,030 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-16 19:22:37,030 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-16 19:22:37,030 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-16 19:22:37,032 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24
[2024-11-16 19:22:37,033 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 82 flow. Second operand  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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)
[2024-11-16 19:22:37,033 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-16 19:22:37,033 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24
[2024-11-16 19:22:37,033 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-16 19:22:37,129 INFO  L124   PetriNetUnfolderBase]: 88/175 cut-off events.
[2024-11-16 19:22:37,129 INFO  L125   PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES.
[2024-11-16 19:22:37,130 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 444 conditions, 175 events. 88/175 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 611 event pairs, 16 based on Foata normal form. 7/173 useless extension candidates. Maximal degree in co-relation 438. Up to 89 conditions per place. 
[2024-11-16 19:22:37,132 INFO  L140   encePairwiseOnDemand]: 19/24 looper letters, 26 selfloop transitions, 7 changer transitions 3/41 dead transitions.
[2024-11-16 19:22:37,132 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 205 flow
[2024-11-16 19:22:37,134 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-16 19:22:37,134 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-16 19:22:37,135 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions.
[2024-11-16 19:22:37,136 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6
[2024-11-16 19:22:37,136 INFO  L175             Difference]: Start difference. First operand has 28 places, 23 transitions, 82 flow. Second operand 5 states and 72 transitions.
[2024-11-16 19:22:37,136 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 205 flow
[2024-11-16 19:22:37,137 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-16 19:22:37,137 INFO  L231             Difference]: Finished difference. Result has 33 places, 26 transitions, 117 flow
[2024-11-16 19:22:37,138 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=33, PETRI_TRANSITIONS=26}
[2024-11-16 19:22:37,138 INFO  L277   CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places.
[2024-11-16 19:22:37,138 INFO  L471      AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 117 flow
[2024-11-16 19:22:37,138 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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)
[2024-11-16 19:22:37,138 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-16 19:22:37,138 INFO  L204   CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-16 19:22:37,139 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-16 19:22:37,139 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-16 19:22:37,139 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-16 19:22:37,139 INFO  L85        PathProgramCache]: Analyzing trace with hash 2092478593, now seen corresponding path program 1 times
[2024-11-16 19:22:37,140 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-16 19:22:37,140 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140520094]
[2024-11-16 19:22:37,140 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-16 19:22:37,140 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-16 19:22:37,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-16 19:22:37,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-16 19:22:37,205 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-16 19:22:37,205 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140520094]
[2024-11-16 19:22:37,205 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140520094] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-16 19:22:37,206 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-16 19:22:37,206 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-16 19:22:37,206 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009370576]
[2024-11-16 19:22:37,206 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-16 19:22:37,206 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-16 19:22:37,207 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-16 19:22:37,207 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-16 19:22:37,208 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-16 19:22:37,212 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24
[2024-11-16 19:22:37,213 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 117 flow. Second operand  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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)
[2024-11-16 19:22:37,213 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-16 19:22:37,213 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24
[2024-11-16 19:22:37,213 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-16 19:22:37,279 INFO  L124   PetriNetUnfolderBase]: 83/163 cut-off events.
[2024-11-16 19:22:37,280 INFO  L125   PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES.
[2024-11-16 19:22:37,281 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 497 conditions, 163 events. 83/163 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 534 event pairs, 6 based on Foata normal form. 5/163 useless extension candidates. Maximal degree in co-relation 488. Up to 60 conditions per place. 
[2024-11-16 19:22:37,283 INFO  L140   encePairwiseOnDemand]: 19/24 looper letters, 23 selfloop transitions, 4 changer transitions 9/41 dead transitions.
[2024-11-16 19:22:37,283 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 231 flow
[2024-11-16 19:22:37,284 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-16 19:22:37,284 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-16 19:22:37,285 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions.
[2024-11-16 19:22:37,285 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.575
[2024-11-16 19:22:37,285 INFO  L175             Difference]: Start difference. First operand has 33 places, 26 transitions, 117 flow. Second operand 5 states and 69 transitions.
[2024-11-16 19:22:37,285 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 231 flow
[2024-11-16 19:22:37,286 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 226 flow, removed 1 selfloop flow, removed 1 redundant places.
[2024-11-16 19:22:37,288 INFO  L231             Difference]: Finished difference. Result has 36 places, 24 transitions, 108 flow
[2024-11-16 19:22:37,288 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=24}
[2024-11-16 19:22:37,289 INFO  L277   CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places.
[2024-11-16 19:22:37,290 INFO  L471      AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 108 flow
[2024-11-16 19:22:37,290 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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)
[2024-11-16 19:22:37,290 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-16 19:22:37,290 INFO  L204   CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-16 19:22:37,290 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-16 19:22:37,290 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-16 19:22:37,291 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-16 19:22:37,291 INFO  L85        PathProgramCache]: Analyzing trace with hash 1795570229, now seen corresponding path program 2 times
[2024-11-16 19:22:37,292 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-16 19:22:37,292 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396090907]
[2024-11-16 19:22:37,292 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-16 19:22:37,292 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-16 19:22:37,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-16 19:22:37,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-16 19:22:37,353 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-16 19:22:37,353 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396090907]
[2024-11-16 19:22:37,353 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396090907] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-16 19:22:37,353 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-16 19:22:37,353 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-16 19:22:37,353 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471802489]
[2024-11-16 19:22:37,353 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-16 19:22:37,354 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-16 19:22:37,354 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-16 19:22:37,354 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-16 19:22:37,354 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-16 19:22:37,362 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24
[2024-11-16 19:22:37,362 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 108 flow. Second operand  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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)
[2024-11-16 19:22:37,362 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-16 19:22:37,362 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24
[2024-11-16 19:22:37,362 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-16 19:22:37,427 INFO  L124   PetriNetUnfolderBase]: 61/125 cut-off events.
[2024-11-16 19:22:37,427 INFO  L125   PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES.
[2024-11-16 19:22:37,428 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 391 conditions, 125 events. 61/125 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 329 event pairs, 9 based on Foata normal form. 6/128 useless extension candidates. Maximal degree in co-relation 381. Up to 93 conditions per place. 
[2024-11-16 19:22:37,428 INFO  L140   encePairwiseOnDemand]: 19/24 looper letters, 23 selfloop transitions, 6 changer transitions 0/34 dead transitions.
[2024-11-16 19:22:37,429 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 203 flow
[2024-11-16 19:22:37,430 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-16 19:22:37,430 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-16 19:22:37,431 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions.
[2024-11-16 19:22:37,431 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.525
[2024-11-16 19:22:37,432 INFO  L175             Difference]: Start difference. First operand has 36 places, 24 transitions, 108 flow. Second operand 5 states and 63 transitions.
[2024-11-16 19:22:37,432 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 203 flow
[2024-11-16 19:22:37,433 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 191 flow, removed 3 selfloop flow, removed 2 redundant places.
[2024-11-16 19:22:37,434 INFO  L231             Difference]: Finished difference. Result has 38 places, 27 transitions, 139 flow
[2024-11-16 19:22:37,434 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=38, PETRI_TRANSITIONS=27}
[2024-11-16 19:22:37,436 INFO  L277   CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places.
[2024-11-16 19:22:37,436 INFO  L471      AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 139 flow
[2024-11-16 19:22:37,436 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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)
[2024-11-16 19:22:37,436 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-11-16 19:22:37,436 INFO  L204   CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-16 19:22:37,436 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-16 19:22:37,437 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-16 19:22:37,437 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-16 19:22:37,437 INFO  L85        PathProgramCache]: Analyzing trace with hash -1773126772, now seen corresponding path program 1 times
[2024-11-16 19:22:37,437 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-16 19:22:37,437 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238283928]
[2024-11-16 19:22:37,437 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-16 19:22:37,437 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-16 19:22:37,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-16 19:22:37,816 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-16 19:22:37,816 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-16 19:22:37,816 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238283928]
[2024-11-16 19:22:37,816 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238283928] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-16 19:22:37,817 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722454119]
[2024-11-16 19:22:37,817 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-16 19:22:37,817 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-16 19:22:37,817 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-16 19:22:37,820 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)
[2024-11-16 19:22:37,823 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-16 19:22:37,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-16 19:22:37,900 INFO  L255         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-16 19:22:37,904 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-16 19:23:38,801 WARN  L286               SmtUtils]: Spent 8.39s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-16 19:24:07,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-16 19:24:07,445 INFO  L311         TraceCheckSpWp]: Computing backward predicates...