./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/popl20-min-max-dec.wvr.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 4a390ef5
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/popl20-min-max-dec.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 67ced8cbf918778cce3ae5cae291c50696df3950945fdf68713903c29ac269e1
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-4a390ef-m
[2024-10-24 12:33:17,050 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-10-24 12:33:17,130 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-10-24 12:33:17,134 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-10-24 12:33:17,135 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-10-24 12:33:17,165 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-10-24 12:33:17,165 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-10-24 12:33:17,166 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-10-24 12:33:17,166 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-10-24 12:33:17,167 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-10-24 12:33:17,167 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-10-24 12:33:17,167 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-10-24 12:33:17,168 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-10-24 12:33:17,168 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-10-24 12:33:17,169 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-10-24 12:33:17,169 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-10-24 12:33:17,169 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-10-24 12:33:17,170 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-10-24 12:33:17,170 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-10-24 12:33:17,170 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-10-24 12:33:17,171 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-10-24 12:33:17,175 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-10-24 12:33:17,176 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-10-24 12:33:17,176 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-10-24 12:33:17,176 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-10-24 12:33:17,176 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-10-24 12:33:17,176 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-10-24 12:33:17,177 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-10-24 12:33:17,177 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-10-24 12:33:17,177 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-10-24 12:33:17,177 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-10-24 12:33:17,178 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-10-24 12:33:17,178 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-24 12:33:17,178 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-10-24 12:33:17,178 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-10-24 12:33:17,179 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-10-24 12:33:17,179 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-10-24 12:33:17,180 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-10-24 12:33:17,180 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-10-24 12:33:17,181 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-10-24 12:33:17,181 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-10-24 12:33:17,182 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-10-24 12:33:17,182 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 -> 67ced8cbf918778cce3ae5cae291c50696df3950945fdf68713903c29ac269e1
[2024-10-24 12:33:17,445 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-10-24 12:33:17,470 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-10-24 12:33:17,473 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-10-24 12:33:17,475 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-10-24 12:33:17,475 INFO  L274        PluginConnector]: CDTParser initialized
[2024-10-24 12:33:17,477 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c
[2024-10-24 12:33:18,969 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-10-24 12:33:19,198 INFO  L384              CDTParser]: Found 1 translation units.
[2024-10-24 12:33:19,198 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c
[2024-10-24 12:33:19,205 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72f0932b/47201c825084477eb9eadc8dec68f217/FLAGbe96ee15d
[2024-10-24 12:33:19,565 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72f0932b/47201c825084477eb9eadc8dec68f217
[2024-10-24 12:33:19,568 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-10-24 12:33:19,569 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-10-24 12:33:19,570 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-10-24 12:33:19,570 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-10-24 12:33:19,576 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-10-24 12:33:19,576 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,577 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e56bba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19, skipping insertion in model container
[2024-10-24 12:33:19,578 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,608 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-10-24 12:33:19,791 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/popl20-min-max-dec.wvr.c[3071,3084]
[2024-10-24 12:33:19,800 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-24 12:33:19,809 INFO  L200         MainTranslator]: Completed pre-run
[2024-10-24 12:33:19,833 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/popl20-min-max-dec.wvr.c[3071,3084]
[2024-10-24 12:33:19,837 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-24 12:33:19,853 INFO  L204         MainTranslator]: Completed translation
[2024-10-24 12:33:19,854 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19 WrapperNode
[2024-10-24 12:33:19,854 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-10-24 12:33:19,855 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-10-24 12:33:19,855 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-10-24 12:33:19,856 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-10-24 12:33:19,862 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,873 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,899 INFO  L138                Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 117
[2024-10-24 12:33:19,900 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-10-24 12:33:19,901 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-10-24 12:33:19,901 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-10-24 12:33:19,902 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-10-24 12:33:19,910 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,910 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,913 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,930 INFO  L175           MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2].
[2024-10-24 12:33:19,930 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,930 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,936 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,941 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,943 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,944 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,963 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-10-24 12:33:19,964 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-10-24 12:33:19,964 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-10-24 12:33:19,964 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-10-24 12:33:19,965 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (1/1) ...
[2024-10-24 12:33:19,987 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-24 12:33:20,010 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-24 12:33:20,051 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)
[2024-10-24 12:33:20,054 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
[2024-10-24 12:33:20,102 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-10-24 12:33:20,102 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2024-10-24 12:33:20,102 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2024-10-24 12:33:20,102 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2024-10-24 12:33:20,102 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2024-10-24 12:33:20,103 INFO  L130     BoogieDeclarations]: Found specification of procedure thread3
[2024-10-24 12:33:20,103 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread3
[2024-10-24 12:33:20,103 INFO  L130     BoogieDeclarations]: Found specification of procedure thread4
[2024-10-24 12:33:20,104 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread4
[2024-10-24 12:33:20,105 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-10-24 12:33:20,105 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-10-24 12:33:20,105 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2024-10-24 12:33:20,105 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2024-10-24 12:33:20,105 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2024-10-24 12:33:20,105 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2024-10-24 12:33:20,105 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-10-24 12:33:20,105 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-10-24 12:33:20,105 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-10-24 12:33:20,105 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2024-10-24 12:33:20,105 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2024-10-24 12:33:20,109 WARN  L207             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-10-24 12:33:20,248 INFO  L238             CfgBuilder]: Building ICFG
[2024-10-24 12:33:20,251 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-10-24 12:33:20,537 INFO  L283             CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-10-24 12:33:20,538 INFO  L287             CfgBuilder]: Performing block encoding
[2024-10-24 12:33:20,732 INFO  L309             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-10-24 12:33:20,732 INFO  L314             CfgBuilder]: Removed 4 assume(true) statements.
[2024-10-24 12:33:20,733 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:33:20 BoogieIcfgContainer
[2024-10-24 12:33:20,733 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-10-24 12:33:20,735 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-10-24 12:33:20,735 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-10-24 12:33:20,740 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-10-24 12:33:20,741 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:33:19" (1/3) ...
[2024-10-24 12:33:20,741 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed9f9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:33:20, skipping insertion in model container
[2024-10-24 12:33:20,741 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:19" (2/3) ...
[2024-10-24 12:33:20,741 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed9f9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:33:20, skipping insertion in model container
[2024-10-24 12:33:20,742 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:33:20" (3/3) ...
[2024-10-24 12:33:20,743 INFO  L112   eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c
[2024-10-24 12:33:20,761 INFO  L209   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-10-24 12:33:20,761 INFO  L149   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-10-24 12:33:20,761 INFO  L484   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-10-24 12:33:20,823 INFO  L143    ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions.
[2024-10-24 12:33:20,864 INFO  L73            FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 120 flow
[2024-10-24 12:33:20,904 INFO  L124   PetriNetUnfolderBase]: 4/42 cut-off events.
[2024-10-24 12:33:20,905 INFO  L125   PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES.
[2024-10-24 12:33:20,908 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 59 conditions, 42 events. 4/42 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. 
[2024-10-24 12:33:20,909 INFO  L82        GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 120 flow
[2024-10-24 12:33:20,912 INFO  L88        GeneralOperation]: Finished RemoveDead, result has has 50 places, 41 transitions, 106 flow
[2024-10-24 12:33:20,922 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-10-24 12:33:20,928 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;@4a329ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-10-24 12:33:20,928 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2024-10-24 12:33:20,948 INFO  L185   PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-10-24 12:33:20,949 INFO  L124   PetriNetUnfolderBase]: 4/40 cut-off events.
[2024-10-24 12:33:20,949 INFO  L125   PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES.
[2024-10-24 12:33:20,949 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-24 12:33:20,950 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-24 12:33:20,950 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-10-24 12:33:20,956 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 12:33:20,956 INFO  L85        PathProgramCache]: Analyzing trace with hash -1137501502, now seen corresponding path program 1 times
[2024-10-24 12:33:20,964 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 12:33:20,964 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289546114]
[2024-10-24 12:33:20,964 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 12:33:20,964 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 12:33:21,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 12:33:21,415 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 12:33:21,415 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 12:33:21,416 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289546114]
[2024-10-24 12:33:21,416 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289546114] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 12:33:21,437 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 12:33:21,437 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 12:33:21,439 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652844163]
[2024-10-24 12:33:21,439 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 12:33:21,447 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-10-24 12:33:21,452 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 12:33:21,480 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-10-24 12:33:21,481 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-10-24 12:33:21,495 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46
[2024-10-24 12:33:21,497 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 106 flow. Second operand  has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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)
[2024-10-24 12:33:21,497 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-24 12:33:21,498 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46
[2024-10-24 12:33:21,498 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-24 12:33:22,246 INFO  L124   PetriNetUnfolderBase]: 3361/4866 cut-off events.
[2024-10-24 12:33:22,247 INFO  L125   PetriNetUnfolderBase]: For 267/267 co-relation queries the response was YES.
[2024-10-24 12:33:22,260 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 9703 conditions, 4866 events. 3361/4866 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 28316 event pairs, 1583 based on Foata normal form. 162/4816 useless extension candidates. Maximal degree in co-relation 9085. Up to 2990 conditions per place. 
[2024-10-24 12:33:22,290 INFO  L140   encePairwiseOnDemand]: 42/46 looper letters, 42 selfloop transitions, 3 changer transitions 0/57 dead transitions.
[2024-10-24 12:33:22,291 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 237 flow
[2024-10-24 12:33:22,294 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-10-24 12:33:22,296 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-10-24 12:33:22,303 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions.
[2024-10-24 12:33:22,305 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5978260869565217
[2024-10-24 12:33:22,306 INFO  L175             Difference]: Start difference. First operand has 50 places, 41 transitions, 106 flow. Second operand 4 states and 110 transitions.
[2024-10-24 12:33:22,307 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 237 flow
[2024-10-24 12:33:22,317 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 215 flow, removed 0 selfloop flow, removed 8 redundant places.
[2024-10-24 12:33:22,322 INFO  L231             Difference]: Finished difference. Result has 46 places, 42 transitions, 104 flow
[2024-10-24 12:33:22,324 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=42}
[2024-10-24 12:33:22,328 INFO  L277   CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places.
[2024-10-24 12:33:22,328 INFO  L471      AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 104 flow
[2024-10-24 12:33:22,329 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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)
[2024-10-24 12:33:22,329 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-24 12:33:22,329 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-24 12:33:22,329 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-10-24 12:33:22,330 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-10-24 12:33:22,330 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 12:33:22,330 INFO  L85        PathProgramCache]: Analyzing trace with hash -66851015, now seen corresponding path program 1 times
[2024-10-24 12:33:22,331 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 12:33:22,331 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391400435]
[2024-10-24 12:33:22,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 12:33:22,331 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 12:33:22,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 12:33:22,446 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-10-24 12:33:22,446 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 12:33:22,447 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391400435]
[2024-10-24 12:33:22,447 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391400435] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 12:33:22,447 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 12:33:22,447 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 12:33:22,447 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588664256]
[2024-10-24 12:33:22,448 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 12:33:22,449 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-10-24 12:33:22,449 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 12:33:22,450 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-10-24 12:33:22,450 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-10-24 12:33:22,462 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46
[2024-10-24 12:33:22,463 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 104 flow. Second operand  has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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)
[2024-10-24 12:33:22,463 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-24 12:33:22,463 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46
[2024-10-24 12:33:22,463 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-24 12:33:23,141 INFO  L124   PetriNetUnfolderBase]: 4370/6365 cut-off events.
[2024-10-24 12:33:23,143 INFO  L125   PetriNetUnfolderBase]: For 1112/1112 co-relation queries the response was YES.
[2024-10-24 12:33:23,152 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 13521 conditions, 6365 events. 4370/6365 cut-off events. For 1112/1112 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 37204 event pairs, 2417 based on Foata normal form. 192/6379 useless extension candidates. Maximal degree in co-relation 2091. Up to 4205 conditions per place. 
[2024-10-24 12:33:23,187 INFO  L140   encePairwiseOnDemand]: 42/46 looper letters, 47 selfloop transitions, 3 changer transitions 0/61 dead transitions.
[2024-10-24 12:33:23,188 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 255 flow
[2024-10-24 12:33:23,189 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-10-24 12:33:23,189 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-10-24 12:33:23,191 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions.
[2024-10-24 12:33:23,192 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.592391304347826
[2024-10-24 12:33:23,193 INFO  L175             Difference]: Start difference. First operand has 46 places, 42 transitions, 104 flow. Second operand 4 states and 109 transitions.
[2024-10-24 12:33:23,193 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 255 flow
[2024-10-24 12:33:23,197 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 249 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-10-24 12:33:23,201 INFO  L231             Difference]: Finished difference. Result has 48 places, 43 transitions, 114 flow
[2024-10-24 12:33:23,201 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=48, PETRI_TRANSITIONS=43}
[2024-10-24 12:33:23,203 INFO  L277   CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places.
[2024-10-24 12:33:23,203 INFO  L471      AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 114 flow
[2024-10-24 12:33:23,203 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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)
[2024-10-24 12:33:23,203 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-24 12:33:23,204 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-24 12:33:23,204 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-10-24 12:33:23,205 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-10-24 12:33:23,205 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 12:33:23,206 INFO  L85        PathProgramCache]: Analyzing trace with hash 319106967, now seen corresponding path program 1 times
[2024-10-24 12:33:23,206 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 12:33:23,206 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576349812]
[2024-10-24 12:33:23,207 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 12:33:23,207 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 12:33:23,238 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 12:33:23,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-10-24 12:33:23,354 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 12:33:23,355 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576349812]
[2024-10-24 12:33:23,355 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576349812] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 12:33:23,355 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 12:33:23,356 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 12:33:23,357 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154218099]
[2024-10-24 12:33:23,357 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 12:33:23,357 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-10-24 12:33:23,358 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 12:33:23,358 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-10-24 12:33:23,359 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-10-24 12:33:23,369 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46
[2024-10-24 12:33:23,369 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 114 flow. Second operand  has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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)
[2024-10-24 12:33:23,370 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-24 12:33:23,370 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46
[2024-10-24 12:33:23,370 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-24 12:33:24,081 INFO  L124   PetriNetUnfolderBase]: 4947/7209 cut-off events.
[2024-10-24 12:33:24,082 INFO  L125   PetriNetUnfolderBase]: For 1480/1745 co-relation queries the response was YES.
[2024-10-24 12:33:24,092 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 16318 conditions, 7209 events. 4947/7209 cut-off events. For 1480/1745 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 42544 event pairs, 2918 based on Foata normal form. 505/7589 useless extension candidates. Maximal degree in co-relation 4322. Up to 4773 conditions per place. 
[2024-10-24 12:33:24,128 INFO  L140   encePairwiseOnDemand]: 42/46 looper letters, 48 selfloop transitions, 3 changer transitions 0/62 dead transitions.
[2024-10-24 12:33:24,130 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 62 transitions, 272 flow
[2024-10-24 12:33:24,130 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-10-24 12:33:24,130 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-10-24 12:33:24,131 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions.
[2024-10-24 12:33:24,132 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.5869565217391305
[2024-10-24 12:33:24,133 INFO  L175             Difference]: Start difference. First operand has 48 places, 43 transitions, 114 flow. Second operand 4 states and 108 transitions.
[2024-10-24 12:33:24,133 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 62 transitions, 272 flow
[2024-10-24 12:33:24,136 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-10-24 12:33:24,137 INFO  L231             Difference]: Finished difference. Result has 50 places, 44 transitions, 124 flow
[2024-10-24 12:33:24,138 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=44}
[2024-10-24 12:33:24,139 INFO  L277   CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places.
[2024-10-24 12:33:24,140 INFO  L471      AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 124 flow
[2024-10-24 12:33:24,140 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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)
[2024-10-24 12:33:24,141 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-24 12:33:24,141 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-24 12:33:24,141 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-10-24 12:33:24,141 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-10-24 12:33:24,142 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 12:33:24,142 INFO  L85        PathProgramCache]: Analyzing trace with hash 1683890689, now seen corresponding path program 1 times
[2024-10-24 12:33:24,142 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 12:33:24,142 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883239297]
[2024-10-24 12:33:24,142 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 12:33:24,143 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 12:33:24,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 12:33:24,251 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-10-24 12:33:24,252 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 12:33:24,252 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883239297]
[2024-10-24 12:33:24,253 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883239297] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 12:33:24,253 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 12:33:24,253 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-10-24 12:33:24,254 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026227058]
[2024-10-24 12:33:24,254 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 12:33:24,255 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-24 12:33:24,255 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 12:33:24,255 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-24 12:33:24,256 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-24 12:33:24,256 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46
[2024-10-24 12:33:24,257 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 124 flow. Second operand  has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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)
[2024-10-24 12:33:24,257 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-24 12:33:24,257 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46
[2024-10-24 12:33:24,257 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-24 12:33:24,756 INFO  L124   PetriNetUnfolderBase]: 4245/6149 cut-off events.
[2024-10-24 12:33:24,757 INFO  L125   PetriNetUnfolderBase]: For 1656/2112 co-relation queries the response was YES.
[2024-10-24 12:33:24,767 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 14705 conditions, 6149 events. 4245/6149 cut-off events. For 1656/2112 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 35908 event pairs, 3544 based on Foata normal form. 456/6493 useless extension candidates. Maximal degree in co-relation 4137. Up to 5716 conditions per place. 
[2024-10-24 12:33:24,851 INFO  L140   encePairwiseOnDemand]: 43/46 looper letters, 31 selfloop transitions, 2 changer transitions 0/45 dead transitions.
[2024-10-24 12:33:24,851 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 192 flow
[2024-10-24 12:33:24,852 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-24 12:33:24,852 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-10-24 12:33:24,853 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions.
[2024-10-24 12:33:24,855 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.572463768115942
[2024-10-24 12:33:24,855 INFO  L175             Difference]: Start difference. First operand has 50 places, 44 transitions, 124 flow. Second operand 3 states and 79 transitions.
[2024-10-24 12:33:24,855 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 192 flow
[2024-10-24 12:33:24,858 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-10-24 12:33:24,859 INFO  L231             Difference]: Finished difference. Result has 51 places, 45 transitions, 132 flow
[2024-10-24 12:33:24,860 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=51, PETRI_TRANSITIONS=45}
[2024-10-24 12:33:24,860 INFO  L277   CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places.
[2024-10-24 12:33:24,861 INFO  L471      AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 132 flow
[2024-10-24 12:33:24,861 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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)
[2024-10-24 12:33:24,861 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-24 12:33:24,861 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-24 12:33:24,861 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-10-24 12:33:24,861 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-10-24 12:33:24,862 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 12:33:24,862 INFO  L85        PathProgramCache]: Analyzing trace with hash -1659799412, now seen corresponding path program 1 times
[2024-10-24 12:33:24,863 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 12:33:24,863 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866871132]
[2024-10-24 12:33:24,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 12:33:24,864 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 12:33:24,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 12:33:25,524 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-10-24 12:33:25,524 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 12:33:25,524 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866871132]
[2024-10-24 12:33:25,525 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866871132] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-24 12:33:25,525 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000310522]
[2024-10-24 12:33:25,525 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 12:33:25,525 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-24 12:33:25,526 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-24 12:33:25,528 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)
[2024-10-24 12:33:25,529 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-10-24 12:33:25,655 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 12:33:25,658 INFO  L255         TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-10-24 12:33:25,665 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-24 12:33:25,728 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-10-24 12:33:25,950 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-10-24 12:33:26,021 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 12:33:26,022 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-24 12:33:26,539 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-10-24 12:33:26,540 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000310522] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-24 12:33:26,540 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-10-24 12:33:26,540 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 8] total 22
[2024-10-24 12:33:26,540 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284976410]
[2024-10-24 12:33:26,541 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-10-24 12:33:26,542 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-10-24 12:33:26,542 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 12:33:26,544 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-10-24 12:33:26,545 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462
[2024-10-24 12:33:26,650 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46
[2024-10-24 12:33:26,651 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 132 flow. Second operand  has 22 states, 22 states have (on average 17.181818181818183) internal successors, (378), 22 states have internal predecessors, (378), 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)
[2024-10-24 12:33:26,651 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-24 12:33:26,651 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46
[2024-10-24 12:33:26,651 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-24 12:33:38,925 INFO  L124   PetriNetUnfolderBase]: 93321/133930 cut-off events.
[2024-10-24 12:33:38,925 INFO  L125   PetriNetUnfolderBase]: For 43324/43324 co-relation queries the response was YES.
[2024-10-24 12:33:39,185 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 317895 conditions, 133930 events. 93321/133930 cut-off events. For 43324/43324 co-relation queries the response was YES. Maximal size of possible extension queue 5030. Compared 1032485 event pairs, 2188 based on Foata normal form. 21/133945 useless extension candidates. Maximal degree in co-relation 317881. Up to 19187 conditions per place. 
[2024-10-24 12:33:39,519 INFO  L140   encePairwiseOnDemand]: 32/46 looper letters, 614 selfloop transitions, 118 changer transitions 735/1476 dead transitions.
[2024-10-24 12:33:39,520 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 1476 transitions, 7447 flow
[2024-10-24 12:33:39,521 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. 
[2024-10-24 12:33:39,521 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 88 states.
[2024-10-24 12:33:39,528 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 2514 transitions.
[2024-10-24 12:33:39,530 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6210474308300395
[2024-10-24 12:33:39,532 INFO  L175             Difference]: Start difference. First operand has 51 places, 45 transitions, 132 flow. Second operand 88 states and 2514 transitions.
[2024-10-24 12:33:39,532 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 1476 transitions, 7447 flow
[2024-10-24 12:33:40,213 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 1476 transitions, 7443 flow, removed 1 selfloop flow, removed 1 redundant places.
[2024-10-24 12:33:40,227 INFO  L231             Difference]: Finished difference. Result has 210 places, 186 transitions, 1186 flow
[2024-10-24 12:33:40,227 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=1186, PETRI_PLACES=210, PETRI_TRANSITIONS=186}
[2024-10-24 12:33:40,230 INFO  L277   CegarLoopForPetriNet]: 50 programPoint places, 160 predicate places.
[2024-10-24 12:33:40,230 INFO  L471      AbstractCegarLoop]: Abstraction has has 210 places, 186 transitions, 1186 flow
[2024-10-24 12:33:40,231 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 22 states have (on average 17.181818181818183) internal successors, (378), 22 states have internal predecessors, (378), 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)
[2024-10-24 12:33:40,231 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-24 12:33:40,231 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-24 12:33:40,251 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-10-24 12:33:40,432 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-24 12:33:40,433 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-10-24 12:33:40,434 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 12:33:40,434 INFO  L85        PathProgramCache]: Analyzing trace with hash 831420880, now seen corresponding path program 2 times
[2024-10-24 12:33:40,434 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 12:33:40,434 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964516284]
[2024-10-24 12:33:40,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 12:33:40,435 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 12:33:40,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 12:33:40,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-10-24 12:33:40,746 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 12:33:40,746 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964516284]
[2024-10-24 12:33:40,746 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964516284] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 12:33:40,747 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 12:33:40,747 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 12:33:40,747 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210828350]
[2024-10-24 12:33:40,747 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 12:33:40,747 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-10-24 12:33:40,747 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 12:33:40,748 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-10-24 12:33:40,748 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-10-24 12:33:40,754 INFO  L467   CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46
[2024-10-24 12:33:40,754 INFO  L103   encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 186 transitions, 1186 flow. Second operand  has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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)
[2024-10-24 12:33:40,754 INFO  L112   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-10-24 12:33:40,755 INFO  L113   encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46
[2024-10-24 12:33:40,755 INFO  L73            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-10-24 12:33:57,613 INFO  L124   PetriNetUnfolderBase]: 73036/109441 cut-off events.
[2024-10-24 12:33:57,613 INFO  L125   PetriNetUnfolderBase]: For 3106923/3108807 co-relation queries the response was YES.
[2024-10-24 12:33:58,885 INFO  L83            FinitePrefix]: Finished finitePrefix Result has 557062 conditions, 109441 events. 73036/109441 cut-off events. For 3106923/3108807 co-relation queries the response was YES. Maximal size of possible extension queue 3948. Compared 892377 event pairs, 12909 based on Foata normal form. 1443/110626 useless extension candidates. Maximal degree in co-relation 556968. Up to 51864 conditions per place. 
[2024-10-24 12:33:59,663 INFO  L140   encePairwiseOnDemand]: 42/46 looper letters, 160 selfloop transitions, 4 changer transitions 309/496 dead transitions.
[2024-10-24 12:33:59,663 INFO  L145   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 496 transitions, 3880 flow
[2024-10-24 12:33:59,664 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-24 12:33:59,664 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-10-24 12:33:59,664 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions.
[2024-10-24 12:33:59,664 INFO  L512   CegarLoopForPetriNet]: DFA transition density 0.6391304347826087
[2024-10-24 12:33:59,665 INFO  L175             Difference]: Start difference. First operand has 210 places, 186 transitions, 1186 flow. Second operand 5 states and 147 transitions.
[2024-10-24 12:33:59,665 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 496 transitions, 3880 flow
[2024-10-24 12:34:42,881 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 496 transitions, 3694 flow, removed 57 selfloop flow, removed 37 redundant places.
[2024-10-24 12:34:42,886 INFO  L231             Difference]: Finished difference. Result has 137 places, 124 transitions, 757 flow
[2024-10-24 12:34:42,887 INFO  L260   CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=757, PETRI_PLACES=137, PETRI_TRANSITIONS=124}
[2024-10-24 12:34:42,888 INFO  L277   CegarLoopForPetriNet]: 50 programPoint places, 87 predicate places.
[2024-10-24 12:34:42,889 INFO  L471      AbstractCegarLoop]: Abstraction has has 137 places, 124 transitions, 757 flow
[2024-10-24 12:34:42,889 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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)
[2024-10-24 12:34:42,889 INFO  L196   CegarLoopForPetriNet]: Found error trace
[2024-10-24 12:34:42,889 INFO  L204   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-24 12:34:42,889 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-10-24 12:34:42,889 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2024-10-24 12:34:42,890 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 12:34:42,890 INFO  L85        PathProgramCache]: Analyzing trace with hash 1023005632, now seen corresponding path program 3 times
[2024-10-24 12:34:42,890 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 12:34:42,890 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469324125]
[2024-10-24 12:34:42,890 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 12:34:42,890 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 12:34:42,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 12:34:43,135 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-10-24 12:34:43,136 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 12:34:43,136 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469324125]
[2024-10-24 12:34:43,136 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469324125] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-24 12:34:43,137 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803113132]
[2024-10-24 12:34:43,137 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-10-24 12:34:43,137 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-24 12:34:43,137 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-24 12:34:43,139 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)
[2024-10-24 12:34:43,140 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-10-24 12:34:43,242 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-10-24 12:34:43,242 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-10-24 12:34:43,243 INFO  L255         TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-10-24 12:34:43,247 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-24 12:34:43,319 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-10-24 12:34:43,319 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 38
[2024-10-24 12:34:43,385 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-10-24 12:34:43,386 INFO  L311         TraceCheckSpWp]: Computing backward predicates...