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


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


Checking for ERROR reachability
Using default analysis
Version a046e57d
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/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-mul-div-a046e57-m
[2024-10-13 07:04:54,670 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-10-13 07:04:54,761 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-10-13 07:04:54,776 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-10-13 07:04:54,776 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-10-13 07:04:54,810 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-10-13 07:04:54,811 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-10-13 07:04:54,812 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-10-13 07:04:54,812 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-10-13 07:04:54,817 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-10-13 07:04:54,818 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-10-13 07:04:54,818 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-10-13 07:04:54,819 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-10-13 07:04:54,819 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-10-13 07:04:54,819 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-10-13 07:04:54,820 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-10-13 07:04:54,820 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-10-13 07:04:54,820 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-10-13 07:04:54,820 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-10-13 07:04:54,820 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-10-13 07:04:54,821 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-10-13 07:04:54,823 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-10-13 07:04:54,824 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-10-13 07:04:54,824 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-10-13 07:04:54,824 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-10-13 07:04:54,824 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-10-13 07:04:54,825 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-10-13 07:04:54,825 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-10-13 07:04:54,825 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-10-13 07:04:54,825 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-10-13 07:04:54,826 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-10-13 07:04:54,826 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-10-13 07:04:54,827 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-13 07:04:54,827 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-10-13 07:04:54,827 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-10-13 07:04:54,828 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-10-13 07:04:54,828 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-10-13 07:04:54,828 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-10-13 07:04:54,828 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-10-13 07:04:54,829 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-10-13 07:04:54,829 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-10-13 07:04:54,830 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-10-13 07:04:54,831 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
[2024-10-13 07:04:55,105 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-10-13 07:04:55,135 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-10-13 07:04:55,138 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-10-13 07:04:55,139 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-10-13 07:04:55,139 INFO  L274        PluginConnector]: CDTParser initialized
[2024-10-13 07:04:55,141 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c
[2024-10-13 07:04:56,712 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-10-13 07:04:56,895 INFO  L384              CDTParser]: Found 1 translation units.
[2024-10-13 07:04:56,896 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c
[2024-10-13 07:04:56,903 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55a9def6/8b99b79edbd7498bb9b857c492674723/FLAG85645587e
[2024-10-13 07:04:56,918 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55a9def6/8b99b79edbd7498bb9b857c492674723
[2024-10-13 07:04:56,921 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-10-13 07:04:56,922 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-10-13 07:04:56,924 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-10-13 07:04:56,925 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-10-13 07:04:56,930 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-10-13 07:04:56,931 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:56" (1/1) ...
[2024-10-13 07:04:56,931 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12331272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:56, skipping insertion in model container
[2024-10-13 07:04:56,932 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:56" (1/1) ...
[2024-10-13 07:04:56,953 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-10-13 07:04:57,143 WARN  L248   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]
[2024-10-13 07:04:57,147 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-13 07:04:57,155 INFO  L200         MainTranslator]: Completed pre-run
[2024-10-13 07:04:57,173 WARN  L248   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]
[2024-10-13 07:04:57,174 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-13 07:04:57,191 INFO  L204         MainTranslator]: Completed translation
[2024-10-13 07:04:57,192 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57 WrapperNode
[2024-10-13 07:04:57,192 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-10-13 07:04:57,193 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-10-13 07:04:57,193 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-10-13 07:04:57,193 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-10-13 07:04:57,198 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,205 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,221 INFO  L138                Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47
[2024-10-13 07:04:57,222 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-10-13 07:04:57,222 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-10-13 07:04:57,222 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-10-13 07:04:57,222 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-10-13 07:04:57,232 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,233 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,235 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,247 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].
[2024-10-13 07:04:57,247 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,247 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,251 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,254 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,255 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,256 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,258 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-10-13 07:04:57,259 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-10-13 07:04:57,259 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-10-13 07:04:57,259 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-10-13 07:04:57,260 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (1/1) ...
[2024-10-13 07:04:57,265 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-13 07:04:57,277 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-13 07:04:57,290 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)
[2024-10-13 07:04:57,293 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
[2024-10-13 07:04:57,335 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-10-13 07:04:57,336 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2024-10-13 07:04:57,336 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2024-10-13 07:04:57,336 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2024-10-13 07:04:57,336 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2024-10-13 07:04:57,336 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-10-13 07:04:57,336 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-10-13 07:04:57,337 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-10-13 07:04:57,339 WARN  L207             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-10-13 07:04:57,416 INFO  L238             CfgBuilder]: Building ICFG
[2024-10-13 07:04:57,418 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-10-13 07:04:57,572 INFO  L283             CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-10-13 07:04:57,572 INFO  L287             CfgBuilder]: Performing block encoding
[2024-10-13 07:04:57,673 INFO  L309             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-10-13 07:04:57,674 INFO  L314             CfgBuilder]: Removed 2 assume(true) statements.
[2024-10-13 07:04:57,674 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:57 BoogieIcfgContainer
[2024-10-13 07:04:57,674 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-10-13 07:04:57,681 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-10-13 07:04:57,682 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-10-13 07:04:57,686 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-10-13 07:04:57,687 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:04:56" (1/3) ...
[2024-10-13 07:04:57,688 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8699819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:57, skipping insertion in model container
[2024-10-13 07:04:57,688 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:57" (2/3) ...
[2024-10-13 07:04:57,689 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8699819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:57, skipping insertion in model container
[2024-10-13 07:04:57,689 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:57" (3/3) ...
[2024-10-13 07:04:57,691 INFO  L112   eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c
[2024-10-13 07:04:57,706 INFO  L209   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-10-13 07:04:57,706 INFO  L149   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-10-13 07:04:57,706 INFO  L484   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-10-13 07:04:57,744 INFO  L143    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-10-13 07:04:57,774 INFO  L73            FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow
[2024-10-13 07:04:57,805 INFO  L124   PetriNetUnfolderBase]: 2/16 cut-off events.
[2024-10-13 07:04:57,805 INFO  L125   PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-10-13 07:04:57,809 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. 
[2024-10-13 07:04:57,809 INFO  L82        GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow
[2024-10-13 07:04:57,812 INFO  L88        GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow
[2024-10-13 07:04:57,824 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-10-13 07:04:57,834 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;@701ba843, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-10-13 07:04:57,835 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2024-10-13 07:04:57,870 INFO  L185   PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-10-13 07:04:57,870 INFO  L124   PetriNetUnfolderBase]: 2/14 cut-off events.
[2024-10-13 07:04:57,870 INFO  L125   PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-10-13 07:04:57,871 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-13 07:04:57,871 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-13 07:04:57,872 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-10-13 07:04:57,879 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-13 07:04:57,879 INFO  L85        PathProgramCache]: Analyzing trace with hash -654319000, now seen corresponding path program 1 times
[2024-10-13 07:04:57,888 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-13 07:04:57,888 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421550891]
[2024-10-13 07:04:57,889 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-13 07:04:57,904 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-13 07:04:58,031 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-13 07:04:58,241 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-13 07:04:58,243 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-13 07:04:58,244 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421550891]
[2024-10-13 07:04:58,245 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421550891] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-13 07:04:58,245 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-13 07:04:58,245 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-10-13 07:04:58,247 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584744711]
[2024-10-13 07:04:58,248 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-13 07:04:58,257 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-13 07:04:58,264 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-13 07:04:58,285 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-13 07:04:58,286 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-13 07:04:58,288 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-10-13 07:04:58,290 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)
[2024-10-13 07:04:58,291 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-13 07:04:58,291 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-10-13 07:04:58,292 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-13 07:04:58,369 INFO  L124   PetriNetUnfolderBase]: 59/104 cut-off events.
[2024-10-13 07:04:58,370 INFO  L125   PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES.
[2024-10-13 07:04:58,373 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. 
[2024-10-13 07:04:58,375 INFO  L140   encePairwiseOnDemand]: 14/18 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions.
[2024-10-13 07:04:58,375 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow
[2024-10-13 07:04:58,378 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-13 07:04:58,381 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-10-13 07:04:58,387 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions.
[2024-10-13 07:04:58,389 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6851851851851852
[2024-10-13 07:04:58,391 INFO  L175             Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 37 transitions.
[2024-10-13 07:04:58,392 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow
[2024-10-13 07:04:58,395 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-10-13 07:04:58,397 INFO  L231             Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow
[2024-10-13 07:04:58,399 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}
[2024-10-13 07:04:58,404 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places.
[2024-10-13 07:04:58,404 INFO  L471      AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow
[2024-10-13 07:04:58,405 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)
[2024-10-13 07:04:58,405 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-13 07:04:58,405 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-13 07:04:58,406 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-10-13 07:04:58,406 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-10-13 07:04:58,408 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-13 07:04:58,408 INFO  L85        PathProgramCache]: Analyzing trace with hash 892593983, now seen corresponding path program 1 times
[2024-10-13 07:04:58,408 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-13 07:04:58,409 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152016892]
[2024-10-13 07:04:58,409 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-13 07:04:58,410 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-13 07:04:58,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-13 07:04:58,612 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-13 07:04:58,613 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-13 07:04:58,613 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152016892]
[2024-10-13 07:04:58,613 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152016892] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-13 07:04:58,613 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-13 07:04:58,613 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-13 07:04:58,614 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468677648]
[2024-10-13 07:04:58,614 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-13 07:04:58,615 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-10-13 07:04:58,616 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-13 07:04:58,617 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-10-13 07:04:58,617 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-10-13 07:04:58,618 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-10-13 07:04:58,618 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)
[2024-10-13 07:04:58,619 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-13 07:04:58,619 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-10-13 07:04:58,619 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-13 07:04:58,752 INFO  L124   PetriNetUnfolderBase]: 57/101 cut-off events.
[2024-10-13 07:04:58,753 INFO  L125   PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES.
[2024-10-13 07:04:58,754 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. 
[2024-10-13 07:04:58,756 INFO  L140   encePairwiseOnDemand]: 13/18 looper letters, 22 selfloop transitions, 6 changer transitions 4/35 dead transitions.
[2024-10-13 07:04:58,757 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 35 transitions, 163 flow
[2024-10-13 07:04:58,757 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-13 07:04:58,758 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-10-13 07:04:58,759 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions.
[2024-10-13 07:04:58,760 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6444444444444445
[2024-10-13 07:04:58,760 INFO  L175             Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 58 transitions.
[2024-10-13 07:04:58,760 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 35 transitions, 163 flow
[2024-10-13 07:04:58,761 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 35 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-10-13 07:04:58,763 INFO  L231             Difference]: Finished difference. Result has 23 places, 19 transitions, 74 flow
[2024-10-13 07:04:58,763 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}
[2024-10-13 07:04:58,764 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places.
[2024-10-13 07:04:58,764 INFO  L471      AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 74 flow
[2024-10-13 07:04:58,765 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)
[2024-10-13 07:04:58,765 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-13 07:04:58,765 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-13 07:04:58,765 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-10-13 07:04:58,765 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-10-13 07:04:58,767 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-13 07:04:58,767 INFO  L85        PathProgramCache]: Analyzing trace with hash -2113678936, now seen corresponding path program 1 times
[2024-10-13 07:04:58,767 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-13 07:04:58,768 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690630015]
[2024-10-13 07:04:58,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-13 07:04:58,768 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-13 07:04:58,791 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-13 07:04:58,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-13 07:04:58,886 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-13 07:04:58,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690630015]
[2024-10-13 07:04:58,887 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690630015] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-13 07:04:58,887 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-13 07:04:58,887 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-13 07:04:58,888 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770917992]
[2024-10-13 07:04:58,888 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-13 07:04:58,888 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-10-13 07:04:58,889 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-13 07:04:58,889 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-10-13 07:04:58,890 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-10-13 07:04:58,890 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-10-13 07:04:58,891 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)
[2024-10-13 07:04:58,891 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-13 07:04:58,891 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-10-13 07:04:58,891 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-13 07:04:59,001 INFO  L124   PetriNetUnfolderBase]: 51/93 cut-off events.
[2024-10-13 07:04:59,001 INFO  L125   PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES.
[2024-10-13 07:04:59,002 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. 
[2024-10-13 07:04:59,007 INFO  L140   encePairwiseOnDemand]: 13/18 looper letters, 17 selfloop transitions, 4 changer transitions 7/31 dead transitions.
[2024-10-13 07:04:59,007 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 161 flow
[2024-10-13 07:04:59,007 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-13 07:04:59,007 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-10-13 07:04:59,008 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions.
[2024-10-13 07:04:59,008 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6
[2024-10-13 07:04:59,008 INFO  L175             Difference]: Start difference. First operand has 23 places, 19 transitions, 74 flow. Second operand 5 states and 54 transitions.
[2024-10-13 07:04:59,008 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 161 flow
[2024-10-13 07:04:59,009 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-10-13 07:04:59,010 INFO  L231             Difference]: Finished difference. Result has 26 places, 17 transitions, 68 flow
[2024-10-13 07:04:59,012 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}
[2024-10-13 07:04:59,013 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, 6 predicate places.
[2024-10-13 07:04:59,014 INFO  L471      AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 68 flow
[2024-10-13 07:04:59,014 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)
[2024-10-13 07:04:59,015 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-13 07:04:59,015 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-13 07:04:59,015 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-10-13 07:04:59,015 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-10-13 07:04:59,016 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-13 07:04:59,016 INFO  L85        PathProgramCache]: Analyzing trace with hash -1919797381, now seen corresponding path program 2 times
[2024-10-13 07:04:59,016 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-13 07:04:59,017 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978711446]
[2024-10-13 07:04:59,017 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-13 07:04:59,017 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-13 07:04:59,035 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-13 07:04:59,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-13 07:04:59,120 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-13 07:04:59,120 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978711446]
[2024-10-13 07:04:59,120 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978711446] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-13 07:04:59,120 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763870800]
[2024-10-13 07:04:59,120 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-10-13 07:04:59,121 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-13 07:04:59,121 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-13 07:04:59,125 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)
[2024-10-13 07:04:59,126 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-10-13 07:04:59,192 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-10-13 07:04:59,192 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-10-13 07:04:59,195 INFO  L255         TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-10-13 07:04:59,200 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-13 07:04:59,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-13 07:04:59,374 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-13 07:04:59,453 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-13 07:04:59,454 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [763870800] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-13 07:04:59,454 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-10-13 07:04:59,454 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5
[2024-10-13 07:04:59,454 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183060214]
[2024-10-13 07:04:59,454 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-10-13 07:04:59,455 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-10-13 07:04:59,455 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-13 07:04:59,455 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-10-13 07:04:59,456 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-10-13 07:04:59,456 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-10-13 07:04:59,456 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)
[2024-10-13 07:04:59,456 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-13 07:04:59,456 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-10-13 07:04:59,456 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-13 07:04:59,577 INFO  L124   PetriNetUnfolderBase]: 41/74 cut-off events.
[2024-10-13 07:04:59,577 INFO  L125   PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES.
[2024-10-13 07:04:59,578 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. 
[2024-10-13 07:04:59,578 INFO  L140   encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 6 changer transitions 0/29 dead transitions.
[2024-10-13 07:04:59,578 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 155 flow
[2024-10-13 07:04:59,579 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-13 07:04:59,579 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-10-13 07:04:59,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions.
[2024-10-13 07:04:59,580 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5888888888888889
[2024-10-13 07:04:59,580 INFO  L175             Difference]: Start difference. First operand has 26 places, 17 transitions, 68 flow. Second operand 5 states and 53 transitions.
[2024-10-13 07:04:59,580 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 155 flow
[2024-10-13 07:04:59,581 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 145 flow, removed 2 selfloop flow, removed 2 redundant places.
[2024-10-13 07:04:59,582 INFO  L231             Difference]: Finished difference. Result has 28 places, 20 transitions, 95 flow
[2024-10-13 07:04:59,582 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}
[2024-10-13 07:04:59,583 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, 8 predicate places.
[2024-10-13 07:04:59,583 INFO  L471      AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 95 flow
[2024-10-13 07:04:59,583 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)
[2024-10-13 07:04:59,583 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-13 07:04:59,583 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-13 07:04:59,603 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-10-13 07:04:59,784 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
[2024-10-13 07:04:59,784 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-10-13 07:04:59,785 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-13 07:04:59,785 INFO  L85        PathProgramCache]: Analyzing trace with hash 722300088, now seen corresponding path program 2 times
[2024-10-13 07:04:59,785 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-13 07:04:59,785 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798712406]
[2024-10-13 07:04:59,785 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-13 07:04:59,786 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-13 07:04:59,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-13 07:04:59,873 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-13 07:04:59,874 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-13 07:04:59,874 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798712406]
[2024-10-13 07:04:59,874 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798712406] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-13 07:04:59,874 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-13 07:04:59,875 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-13 07:04:59,875 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240653180]
[2024-10-13 07:04:59,875 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-13 07:04:59,876 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-10-13 07:04:59,876 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-13 07:04:59,877 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-10-13 07:04:59,877 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-10-13 07:04:59,878 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-10-13 07:04:59,878 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)
[2024-10-13 07:04:59,878 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-13 07:04:59,878 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-10-13 07:04:59,878 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-13 07:04:59,957 INFO  L124   PetriNetUnfolderBase]: 37/70 cut-off events.
[2024-10-13 07:04:59,957 INFO  L125   PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES.
[2024-10-13 07:04:59,958 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. 
[2024-10-13 07:04:59,959 INFO  L140   encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 6 changer transitions 0/29 dead transitions.
[2024-10-13 07:04:59,960 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 180 flow
[2024-10-13 07:04:59,961 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-13 07:04:59,961 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-10-13 07:04:59,962 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions.
[2024-10-13 07:04:59,969 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5555555555555556
[2024-10-13 07:04:59,971 INFO  L175             Difference]: Start difference. First operand has 28 places, 20 transitions, 95 flow. Second operand 5 states and 50 transitions.
[2024-10-13 07:04:59,971 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 180 flow
[2024-10-13 07:04:59,973 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places.
[2024-10-13 07:04:59,974 INFO  L231             Difference]: Finished difference. Result has 33 places, 23 transitions, 131 flow
[2024-10-13 07:04:59,974 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}
[2024-10-13 07:04:59,975 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, 13 predicate places.
[2024-10-13 07:04:59,975 INFO  L471      AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 131 flow
[2024-10-13 07:04:59,975 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)
[2024-10-13 07:04:59,976 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-13 07:04:59,976 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-13 07:04:59,976 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-10-13 07:04:59,976 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-10-13 07:04:59,977 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-13 07:04:59,977 INFO  L85        PathProgramCache]: Analyzing trace with hash -1268642375, now seen corresponding path program 1 times
[2024-10-13 07:04:59,977 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-13 07:04:59,977 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963054366]
[2024-10-13 07:04:59,977 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-13 07:04:59,978 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-13 07:05:00,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-13 07:05:00,416 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-13 07:05:00,417 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-13 07:05:00,417 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963054366]
[2024-10-13 07:05:00,417 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963054366] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-13 07:05:00,417 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316682720]
[2024-10-13 07:05:00,417 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-13 07:05:00,418 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-13 07:05:00,418 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-13 07:05:00,420 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)
[2024-10-13 07:05:00,421 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-10-13 07:05:00,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-13 07:05:00,517 INFO  L255         TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-10-13 07:05:00,519 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-13 07:05:33,358 WARN  L286               SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-10-13 07:05:43,018 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-13 07:05:43,019 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-13 07:05:47,800 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-13 07:05:47,800 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [316682720] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-13 07:05:47,801 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-10-13 07:05:47,801 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14
[2024-10-13 07:05:47,801 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790966721]
[2024-10-13 07:05:47,801 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-10-13 07:05:47,801 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-10-13 07:05:47,802 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-13 07:05:47,802 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-10-13 07:05:47,802 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=147, Unknown=4, NotChecked=0, Total=210
[2024-10-13 07:05:47,803 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18
[2024-10-13 07:05:47,803 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)
[2024-10-13 07:05:47,803 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-13 07:05:47,806 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18
[2024-10-13 07:05:47,807 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-13 07:05:49,757 INFO  L124   PetriNetUnfolderBase]: 125/239 cut-off events.
[2024-10-13 07:05:49,757 INFO  L125   PetriNetUnfolderBase]: For 454/454 co-relation queries the response was YES.
[2024-10-13 07:05:49,759 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. 
[2024-10-13 07:05:49,765 INFO  L140   encePairwiseOnDemand]: 12/18 looper letters, 49 selfloop transitions, 25 changer transitions 14/91 dead transitions.
[2024-10-13 07:05:49,767 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 91 transitions, 651 flow
[2024-10-13 07:05:49,768 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2024-10-13 07:05:49,768 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-10-13 07:05:49,769 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions.
[2024-10-13 07:05:49,770 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6324786324786325
[2024-10-13 07:05:49,770 INFO  L175             Difference]: Start difference. First operand has 33 places, 23 transitions, 131 flow. Second operand 13 states and 148 transitions.
[2024-10-13 07:05:49,770 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 91 transitions, 651 flow
[2024-10-13 07:05:49,776 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 91 transitions, 636 flow, removed 6 selfloop flow, removed 1 redundant places.
[2024-10-13 07:05:49,779 INFO  L231             Difference]: Finished difference. Result has 51 places, 44 transitions, 383 flow
[2024-10-13 07:05:49,779 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}
[2024-10-13 07:05:49,780 INFO  L277   CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places.
[2024-10-13 07:05:49,780 INFO  L471      AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 383 flow
[2024-10-13 07:05:49,781 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)
[2024-10-13 07:05:49,781 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-13 07:05:49,781 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-13 07:05:49,796 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-10-13 07:05:49,981 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
[2024-10-13 07:05:49,982 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-10-13 07:05:49,983 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-13 07:05:49,983 INFO  L85        PathProgramCache]: Analyzing trace with hash -856333841, now seen corresponding path program 2 times
[2024-10-13 07:05:49,983 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-13 07:05:49,983 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50685397]
[2024-10-13 07:05:49,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-13 07:05:49,983 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-13 07:05:50,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-13 07:05:50,284 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-13 07:05:50,284 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-13 07:05:50,285 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50685397]
[2024-10-13 07:05:50,285 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50685397] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-13 07:05:50,285 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442467036]
[2024-10-13 07:05:50,285 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-10-13 07:05:50,285 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-13 07:05:50,285 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-13 07:05:50,288 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)
[2024-10-13 07:05:50,289 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-10-13 07:05:50,371 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-10-13 07:05:50,371 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-10-13 07:05:50,372 INFO  L255         TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-10-13 07:05:50,373 INFO  L278         TraceCheckSpWp]: Computing forward predicates...