./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/mult-dist.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC --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 c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 00:07:00,917 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-24 00:07:00,979 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-24 00:07:00,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 00:07:00,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 00:07:01,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 00:07:01,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 00:07:01,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 00:07:01,019 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 00:07:01,019 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-24 00:07:01,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 00:07:01,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 00:07:01,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 00:07:01,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-24 00:07:01,021 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-24 00:07:01,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 00:07:01,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-24 00:07:01,022 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-24 00:07:01,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-24 00:07:01,022 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-24 00:07:01,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-24 00:07:01,023 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-24 00:07:01,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 00:07:01,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-24 00:07:01,023 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-24 00:07:01,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-24 00:07:01,023 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 00:07:01,023 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-24 00:07:01,024 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 00:07:01,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 00:07:01,024 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 00:07:01,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 00:07:01,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:07:01,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 00:07:01,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 00:07:01,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 00:07:01,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 00:07:01,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:07:01,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 00:07:01,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 00:07:01,026 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-24 00:07:01,026 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-24 00:07:01,026 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-24 00:07:01,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-24 00:07:01,026 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 00:07:01,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 00:07:01,027 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 00:07:01,027 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 00:07:01,027 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC
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 -> c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c
[2024-11-24 00:07:01,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 00:07:01,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 00:07:01,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 00:07:01,398 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-24 00:07:01,398 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-24 00:07:01,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/mult-dist.wvr.c
[2024-11-24 00:07:04,392 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/data/34bdf0971/ea81749eaa254cb393fee9e6fada2b2e/FLAG13f70bdb5
[2024-11-24 00:07:04,705 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-24 00:07:04,709 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/sv-benchmarks/c/weaver/mult-dist.wvr.c
[2024-11-24 00:07:04,720 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/data/34bdf0971/ea81749eaa254cb393fee9e6fada2b2e/FLAG13f70bdb5
[2024-11-24 00:07:04,744 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/data/34bdf0971/ea81749eaa254cb393fee9e6fada2b2e
[2024-11-24 00:07:04,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 00:07:04,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 00:07:04,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 00:07:04,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 00:07:04,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 00:07:04,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:07:04" (1/1) ...
[2024-11-24 00:07:04,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca335e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:04, skipping insertion in model container
[2024-11-24 00:07:04,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:07:04" (1/1) ...
[2024-11-24 00:07:04,782 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-24 00:07:04,999 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/sv-benchmarks/c/weaver/mult-dist.wvr.c[2155,2168]
[2024-11-24 00:07:05,006 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 00:07:05,020 INFO L200 MainTranslator]: Completed pre-run
[2024-11-24 00:07:05,047 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/sv-benchmarks/c/weaver/mult-dist.wvr.c[2155,2168]
[2024-11-24 00:07:05,048 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 00:07:05,062 INFO L204 MainTranslator]: Completed translation
[2024-11-24 00:07:05,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05 WrapperNode
[2024-11-24 00:07:05,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 00:07:05,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 00:07:05,065 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 00:07:05,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 00:07:05,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,094 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54
[2024-11-24 00:07:05,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 00:07:05,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 00:07:05,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 00:07:05,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 00:07:05,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,106 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,118 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-24 00:07:05,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,123 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 00:07:05,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 00:07:05,132 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 00:07:05,132 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-24 00:07:05,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (1/1) ...
[2024-11-24 00:07:05,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:07:05,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:05,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 00:07:05,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 00:07:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-24 00:07:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2024-11-24 00:07:05,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2024-11-24 00:07:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2024-11-24 00:07:05,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2024-11-24 00:07:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2024-11-24 00:07:05,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2024-11-24 00:07:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-24 00:07:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 00:07:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 00:07:05,202 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-24 00:07:05,317 INFO L234 CfgBuilder]: Building ICFG
[2024-11-24 00:07:05,321 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 00:07:05,570 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-24 00:07:05,570 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-24 00:07:05,812 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 00:07:05,812 INFO L312 CfgBuilder]: Removed 3 assume(true) statements.
[2024-11-24 00:07:05,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:07:05 BoogieIcfgContainer
[2024-11-24 00:07:05,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 00:07:05,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 00:07:05,817 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 00:07:05,822 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-24 00:07:05,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:07:04" (1/3) ...
[2024-11-24 00:07:05,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dec5ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:07:05, skipping insertion in model container
[2024-11-24 00:07:05,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:05" (2/3) ...
[2024-11-24 00:07:05,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dec5ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:07:05, skipping insertion in model container
[2024-11-24 00:07:05,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:07:05" (3/3) ...
[2024-11-24 00:07:05,826 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c
[2024-11-24 00:07:05,843 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 00:07:05,844 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-dist.wvr.c that has 4 procedures, 23 locations, 1 initial locations, 3 loop locations, and 1 error locations.
[2024-11-24 00:07:05,844 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-24 00:07:05,922 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2024-11-24 00:07:05,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 71 flow
[2024-11-24 00:07:06,009 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events.
[2024-11-24 00:07:06,011 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2024-11-24 00:07:06,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 3/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place.
[2024-11-24 00:07:06,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 25 transitions, 71 flow
[2024-11-24 00:07:06,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 60 flow
[2024-11-24 00:07:06,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 00:07:06,042 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;@21dbeb42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 00:07:06,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2024-11-24 00:07:06,054 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-24 00:07:06,054 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events.
[2024-11-24 00:07:06,054 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2024-11-24 00:07:06,054 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:06,055 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:06,055 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 1 more)] ===
[2024-11-24 00:07:06,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:06,061 INFO L85 PathProgramCache]: Analyzing trace with hash -374601822, now seen corresponding path program 1 times
[2024-11-24 00:07:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:06,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490400272]
[2024-11-24 00:07:06,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:07:06,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:07:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:06,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:06,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490400272]
[2024-11-24 00:07:06,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490400272] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:07:06,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:07:06,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 00:07:06,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429470307]
[2024-11-24 00:07:06,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:06,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-24 00:07:06,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:06,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-24 00:07:06,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 00:07:06,793 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:06,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:06,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:06,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:06,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:07,066 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events.
[2024-11-24 00:07:07,066 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES.
[2024-11-24 00:07:07,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1783 event pairs, 124 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place.
[2024-11-24 00:07:07,075 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions.
[2024-11-24 00:07:07,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow
[2024-11-24 00:07:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 00:07:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-24 00:07:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions.
[2024-11-24 00:07:07,088 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666
[2024-11-24 00:07:07,095 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 60 flow. Second operand 3 states and 50 transitions.
[2024-11-24 00:07:07,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow
[2024-11-24 00:07:07,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places.
[2024-11-24 00:07:07,110 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow
[2024-11-24 00:07:07,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24}
[2024-11-24 00:07:07,118 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places.
[2024-11-24 00:07:07,118 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow
[2024-11-24 00:07:07,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:07,119 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:07,119 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:07,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-24 00:07:07,119 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 1 more)] ===
[2024-11-24 00:07:07,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:07,121 INFO L85 PathProgramCache]: Analyzing trace with hash -721346966, now seen corresponding path program 1 times
[2024-11-24 00:07:07,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:07,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112690343]
[2024-11-24 00:07:07,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:07:07,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:07:07,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:07,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:07,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112690343]
[2024-11-24 00:07:07,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112690343] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:07:07,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:07:07,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-24 00:07:07,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623699485]
[2024-11-24 00:07:07,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:07,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:07:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:07,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:07:07,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2024-11-24 00:07:07,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:07,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:07,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:07,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:07,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:07,986 INFO L124 PetriNetUnfolderBase]: 544/771 cut-off events.
[2024-11-24 00:07:07,987 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES.
[2024-11-24 00:07:07,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1913 conditions, 771 events. 544/771 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2537 event pairs, 203 based on Foata normal form. 2/773 useless extension candidates. Maximal degree in co-relation 545. Up to 554 conditions per place.
[2024-11-24 00:07:07,998 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 47 selfloop transitions, 18 changer transitions 3/69 dead transitions.
[2024-11-24 00:07:07,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 69 transitions, 347 flow
[2024-11-24 00:07:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 00:07:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 00:07:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions.
[2024-11-24 00:07:08,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716
[2024-11-24 00:07:08,002 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 7 states and 87 transitions.
[2024-11-24 00:07:08,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 69 transitions, 347 flow
[2024-11-24 00:07:08,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 69 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-24 00:07:08,005 INFO L231 Difference]: Finished difference. Result has 34 places, 40 transitions, 198 flow
[2024-11-24 00:07:08,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=34, PETRI_TRANSITIONS=40}
[2024-11-24 00:07:08,008 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places.
[2024-11-24 00:07:08,008 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 40 transitions, 198 flow
[2024-11-24 00:07:08,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:08,008 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:08,009 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:08,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-24 00:07:08,009 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 1 more)] ===
[2024-11-24 00:07:08,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash 816459937, now seen corresponding path program 1 times
[2024-11-24 00:07:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:08,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195774038]
[2024-11-24 00:07:08,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:07:08,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:07:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:08,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:08,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195774038]
[2024-11-24 00:07:08,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195774038] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:08,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270598981]
[2024-11-24 00:07:08,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:07:08,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:08,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:08,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:08,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-24 00:07:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:07:08,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:08,448 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:08,632 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:09,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270598981] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:07:09,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 00:07:09,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15
[2024-11-24 00:07:09,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95391401]
[2024-11-24 00:07:09,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:07:09,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-24 00:07:09,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:09,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-24 00:07:09,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210
[2024-11-24 00:07:09,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:09,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 198 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:09,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:09,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:09,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:11,516 INFO L124 PetriNetUnfolderBase]: 1135/1672 cut-off events.
[2024-11-24 00:07:11,516 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES.
[2024-11-24 00:07:11,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5285 conditions, 1672 events. 1135/1672 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7037 event pairs, 142 based on Foata normal form. 24/1696 useless extension candidates. Maximal degree in co-relation 3157. Up to 542 conditions per place.
[2024-11-24 00:07:11,535 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 170 selfloop transitions, 60 changer transitions 0/231 dead transitions.
[2024-11-24 00:07:11,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 231 transitions, 1367 flow
[2024-11-24 00:07:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-11-24 00:07:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2024-11-24 00:07:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 300 transitions.
[2024-11-24 00:07:11,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454
[2024-11-24 00:07:11,541 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 198 flow. Second operand 22 states and 300 transitions.
[2024-11-24 00:07:11,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 231 transitions, 1367 flow
[2024-11-24 00:07:11,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 231 transitions, 1345 flow, removed 11 selfloop flow, removed 0 redundant places.
[2024-11-24 00:07:11,556 INFO L231 Difference]: Finished difference. Result has 71 places, 94 transitions, 718 flow
[2024-11-24 00:07:11,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=718, PETRI_PLACES=71, PETRI_TRANSITIONS=94}
[2024-11-24 00:07:11,557 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places.
[2024-11-24 00:07:11,557 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 94 transitions, 718 flow
[2024-11-24 00:07:11,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:11,557 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:11,558 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:11,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-24 00:07:11,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:11,758 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 1 more)] ===
[2024-11-24 00:07:11,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:11,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1539085174, now seen corresponding path program 2 times
[2024-11-24 00:07:11,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:11,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159862517]
[2024-11-24 00:07:11,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:07:11,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:11,790 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:11,790 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159862517]
[2024-11-24 00:07:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159862517] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91961690]
[2024-11-24 00:07:12,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:07:12,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:12,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:12,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:12,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-24 00:07:12,143 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:12,143 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:12,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:12,149 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:12,355 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 00:07:12,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91961690] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:07:12,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:07:12,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 8
[2024-11-24 00:07:12,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434914600]
[2024-11-24 00:07:12,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:12,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:07:12,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:12,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:07:12,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-24 00:07:12,357 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:12,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 94 transitions, 718 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:12,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:12,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:12,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:13,126 INFO L124 PetriNetUnfolderBase]: 1536/2293 cut-off events.
[2024-11-24 00:07:13,127 INFO L125 PetriNetUnfolderBase]: For 21136/21136 co-relation queries the response was YES.
[2024-11-24 00:07:13,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12756 conditions, 2293 events. 1536/2293 cut-off events. For 21136/21136 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10330 event pairs, 475 based on Foata normal form. 8/2301 useless extension candidates. Maximal degree in co-relation 9708. Up to 1296 conditions per place.
[2024-11-24 00:07:13,151 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 150 selfloop transitions, 30 changer transitions 4/185 dead transitions.
[2024-11-24 00:07:13,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 185 transitions, 1736 flow
[2024-11-24 00:07:13,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 00:07:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 00:07:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions.
[2024-11-24 00:07:13,153 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857
[2024-11-24 00:07:13,153 INFO L175 Difference]: Start difference. First operand has 71 places, 94 transitions, 718 flow. Second operand 7 states and 92 transitions.
[2024-11-24 00:07:13,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 185 transitions, 1736 flow
[2024-11-24 00:07:13,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 185 transitions, 1600 flow, removed 68 selfloop flow, removed 0 redundant places.
[2024-11-24 00:07:13,269 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 861 flow
[2024-11-24 00:07:13,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=861, PETRI_PLACES=82, PETRI_TRANSITIONS=104}
[2024-11-24 00:07:13,272 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 54 predicate places.
[2024-11-24 00:07:13,272 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 861 flow
[2024-11-24 00:07:13,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:13,272 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:13,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:13,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-24 00:07:13,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:13,474 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 1 more)] ===
[2024-11-24 00:07:13,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:13,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1535954431, now seen corresponding path program 2 times
[2024-11-24 00:07:13,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:13,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458740422]
[2024-11-24 00:07:13,474 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:07:13,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:13,505 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:13,505 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:13,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:13,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458740422]
[2024-11-24 00:07:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458740422] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:13,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626736668]
[2024-11-24 00:07:13,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:07:13,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:13,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:13,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:13,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-24 00:07:13,900 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:13,900 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:13,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:13,902 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:14,140 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:14,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626736668] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:14,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:07:14,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 16
[2024-11-24 00:07:14,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879310546]
[2024-11-24 00:07:14,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:14,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:07:14,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:14,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:07:14,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240
[2024-11-24 00:07:14,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:14,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 861 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:14,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:14,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:14,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:15,344 INFO L124 PetriNetUnfolderBase]: 1896/2839 cut-off events.
[2024-11-24 00:07:15,344 INFO L125 PetriNetUnfolderBase]: For 29221/29221 co-relation queries the response was YES.
[2024-11-24 00:07:15,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17175 conditions, 2839 events. 1896/2839 cut-off events. For 29221/29221 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13031 event pairs, 388 based on Foata normal form. 4/2843 useless extension candidates. Maximal degree in co-relation 13182. Up to 1003 conditions per place.
[2024-11-24 00:07:15,373 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 150 selfloop transitions, 66 changer transitions 0/217 dead transitions.
[2024-11-24 00:07:15,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 217 transitions, 2164 flow
[2024-11-24 00:07:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-24 00:07:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states.
[2024-11-24 00:07:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions.
[2024-11-24 00:07:15,375 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5381818181818182
[2024-11-24 00:07:15,375 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 861 flow. Second operand 11 states and 148 transitions.
[2024-11-24 00:07:15,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 217 transitions, 2164 flow
[2024-11-24 00:07:15,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 217 transitions, 2018 flow, removed 64 selfloop flow, removed 2 redundant places.
[2024-11-24 00:07:15,466 INFO L231 Difference]: Finished difference. Result has 96 places, 140 transitions, 1390 flow
[2024-11-24 00:07:15,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1390, PETRI_PLACES=96, PETRI_TRANSITIONS=140}
[2024-11-24 00:07:15,467 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 68 predicate places.
[2024-11-24 00:07:15,467 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 140 transitions, 1390 flow
[2024-11-24 00:07:15,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:15,467 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:15,467 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:15,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-24 00:07:15,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:15,668 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 1 more)] ===
[2024-11-24 00:07:15,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:15,668 INFO L85 PathProgramCache]: Analyzing trace with hash 502048830, now seen corresponding path program 1 times
[2024-11-24 00:07:15,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:15,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273217159]
[2024-11-24 00:07:15,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:07:15,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:07:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:15,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273217159]
[2024-11-24 00:07:15,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273217159] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:07:15,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:07:15,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-24 00:07:15,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444632094]
[2024-11-24 00:07:15,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:15,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:07:15,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:15,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:07:15,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-24 00:07:15,854 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:15,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 140 transitions, 1390 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:15,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:15,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:15,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:16,482 INFO L124 PetriNetUnfolderBase]: 1954/2921 cut-off events.
[2024-11-24 00:07:16,482 INFO L125 PetriNetUnfolderBase]: For 34615/34615 co-relation queries the response was YES.
[2024-11-24 00:07:16,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18231 conditions, 2921 events. 1954/2921 cut-off events. For 34615/34615 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 13620 event pairs, 827 based on Foata normal form. 4/2925 useless extension candidates. Maximal degree in co-relation 17441. Up to 2433 conditions per place.
[2024-11-24 00:07:16,515 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 157 selfloop transitions, 37 changer transitions 5/200 dead transitions.
[2024-11-24 00:07:16,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 200 transitions, 2381 flow
[2024-11-24 00:07:16,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 00:07:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 00:07:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions.
[2024-11-24 00:07:16,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142
[2024-11-24 00:07:16,516 INFO L175 Difference]: Start difference. First operand has 96 places, 140 transitions, 1390 flow. Second operand 7 states and 90 transitions.
[2024-11-24 00:07:16,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 200 transitions, 2381 flow
[2024-11-24 00:07:16,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 200 transitions, 2319 flow, removed 31 selfloop flow, removed 0 redundant places.
[2024-11-24 00:07:16,617 INFO L231 Difference]: Finished difference. Result has 107 places, 156 transitions, 1701 flow
[2024-11-24 00:07:16,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1701, PETRI_PLACES=107, PETRI_TRANSITIONS=156}
[2024-11-24 00:07:16,618 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 79 predicate places.
[2024-11-24 00:07:16,618 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 156 transitions, 1701 flow
[2024-11-24 00:07:16,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:16,619 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:16,619 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:16,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-24 00:07:16,619 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 1 more)] ===
[2024-11-24 00:07:16,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:16,620 INFO L85 PathProgramCache]: Analyzing trace with hash -170663126, now seen corresponding path program 3 times
[2024-11-24 00:07:16,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:16,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707514084]
[2024-11-24 00:07:16,620 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:07:16,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:16,637 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 00:07:16,638 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:16,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:16,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707514084]
[2024-11-24 00:07:16,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707514084] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:16,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294124844]
[2024-11-24 00:07:16,881 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:07:16,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:16,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:16,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:16,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-24 00:07:16,974 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 00:07:16,974 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:16,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:16,979 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:17,155 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:17,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294124844] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:17,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:07:17,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 15
[2024-11-24 00:07:17,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584924409]
[2024-11-24 00:07:17,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:17,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:07:17,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:17,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:07:17,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2024-11-24 00:07:17,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:17,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 156 transitions, 1701 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:17,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:17,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:17,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:18,255 INFO L124 PetriNetUnfolderBase]: 2274/3378 cut-off events.
[2024-11-24 00:07:18,256 INFO L125 PetriNetUnfolderBase]: For 50070/50070 co-relation queries the response was YES.
[2024-11-24 00:07:18,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22947 conditions, 3378 events. 2274/3378 cut-off events. For 50070/50070 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 15979 event pairs, 679 based on Foata normal form. 8/3386 useless extension candidates. Maximal degree in co-relation 22091. Up to 1659 conditions per place.
[2024-11-24 00:07:18,300 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 192 selfloop transitions, 60 changer transitions 1/254 dead transitions.
[2024-11-24 00:07:18,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 254 transitions, 3153 flow
[2024-11-24 00:07:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-24 00:07:18,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2024-11-24 00:07:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions.
[2024-11-24 00:07:18,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111
[2024-11-24 00:07:18,303 INFO L175 Difference]: Start difference. First operand has 107 places, 156 transitions, 1701 flow. Second operand 9 states and 115 transitions.
[2024-11-24 00:07:18,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 254 transitions, 3153 flow
[2024-11-24 00:07:18,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 254 transitions, 2969 flow, removed 51 selfloop flow, removed 3 redundant places.
[2024-11-24 00:07:18,469 INFO L231 Difference]: Finished difference. Result has 116 places, 202 transitions, 2372 flow
[2024-11-24 00:07:18,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2372, PETRI_PLACES=116, PETRI_TRANSITIONS=202}
[2024-11-24 00:07:18,470 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 88 predicate places.
[2024-11-24 00:07:18,470 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 202 transitions, 2372 flow
[2024-11-24 00:07:18,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:18,471 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:18,472 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:18,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-24 00:07:18,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-11-24 00:07:18,676 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:18,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:18,677 INFO L85 PathProgramCache]: Analyzing trace with hash 594448364, now seen corresponding path program 2 times
[2024-11-24 00:07:18,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:18,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573288218]
[2024-11-24 00:07:18,677 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:07:18,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:18,691 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:18,692 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:18,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:18,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573288218]
[2024-11-24 00:07:18,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573288218] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:18,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614933639]
[2024-11-24 00:07:18,905 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:07:18,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:18,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:18,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:18,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-24 00:07:18,976 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:18,976 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:18,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:18,978 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:19,042 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 00:07:19,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614933639] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:07:19,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:07:19,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9
[2024-11-24 00:07:19,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805352936]
[2024-11-24 00:07:19,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:19,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:07:19,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:19,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:07:19,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2024-11-24 00:07:19,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:19,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 202 transitions, 2372 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:19,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:19,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:19,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:19,604 INFO L124 PetriNetUnfolderBase]: 2446/3603 cut-off events.
[2024-11-24 00:07:19,604 INFO L125 PetriNetUnfolderBase]: For 58428/58428 co-relation queries the response was YES.
[2024-11-24 00:07:19,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25537 conditions, 3603 events. 2446/3603 cut-off events. For 58428/58428 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17183 event pairs, 805 based on Foata normal form. 4/3607 useless extension candidates. Maximal degree in co-relation 24717. Up to 2846 conditions per place.
[2024-11-24 00:07:19,642 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 213 selfloop transitions, 83 changer transitions 5/302 dead transitions.
[2024-11-24 00:07:19,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 302 transitions, 4202 flow
[2024-11-24 00:07:19,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 00:07:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 00:07:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions.
[2024-11-24 00:07:19,644 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716
[2024-11-24 00:07:19,644 INFO L175 Difference]: Start difference. First operand has 116 places, 202 transitions, 2372 flow. Second operand 7 states and 87 transitions.
[2024-11-24 00:07:19,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 302 transitions, 4202 flow
[2024-11-24 00:07:19,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 302 transitions, 3914 flow, removed 144 selfloop flow, removed 0 redundant places.
[2024-11-24 00:07:20,002 INFO L231 Difference]: Finished difference. Result has 127 places, 249 transitions, 3154 flow
[2024-11-24 00:07:20,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3154, PETRI_PLACES=127, PETRI_TRANSITIONS=249}
[2024-11-24 00:07:20,005 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 99 predicate places.
[2024-11-24 00:07:20,005 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 249 transitions, 3154 flow
[2024-11-24 00:07:20,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:20,005 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:20,005 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:20,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-24 00:07:20,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2024-11-24 00:07:20,206 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:20,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1679173404, now seen corresponding path program 3 times
[2024-11-24 00:07:20,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:20,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367578564]
[2024-11-24 00:07:20,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:07:20,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:20,222 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 00:07:20,223 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:20,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:20,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367578564]
[2024-11-24 00:07:20,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367578564] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:20,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679080758]
[2024-11-24 00:07:20,447 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:07:20,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:20,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:20,450 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:20,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-24 00:07:20,524 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 00:07:20,524 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:20,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:20,529 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:20,589 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 00:07:20,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679080758] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:07:20,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:07:20,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9
[2024-11-24 00:07:20,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735929987]
[2024-11-24 00:07:20,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:20,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:07:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:20,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:07:20,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2024-11-24 00:07:20,591 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:20,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 249 transitions, 3154 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:20,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:20,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:20,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:21,309 INFO L124 PetriNetUnfolderBase]: 2494/3671 cut-off events.
[2024-11-24 00:07:21,309 INFO L125 PetriNetUnfolderBase]: For 55215/55215 co-relation queries the response was YES.
[2024-11-24 00:07:21,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26092 conditions, 3671 events. 2494/3671 cut-off events. For 55215/55215 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 17441 event pairs, 706 based on Foata normal form. 4/3675 useless extension candidates. Maximal degree in co-relation 25787. Up to 2779 conditions per place.
[2024-11-24 00:07:21,336 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 196 selfloop transitions, 148 changer transitions 5/350 dead transitions.
[2024-11-24 00:07:21,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 350 transitions, 5146 flow
[2024-11-24 00:07:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 00:07:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 00:07:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions.
[2024-11-24 00:07:21,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144
[2024-11-24 00:07:21,337 INFO L175 Difference]: Start difference. First operand has 127 places, 249 transitions, 3154 flow. Second operand 7 states and 86 transitions.
[2024-11-24 00:07:21,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 350 transitions, 5146 flow
[2024-11-24 00:07:21,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 350 transitions, 4896 flow, removed 125 selfloop flow, removed 1 redundant places.
[2024-11-24 00:07:21,613 INFO L231 Difference]: Finished difference. Result has 135 places, 292 transitions, 4132 flow
[2024-11-24 00:07:21,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2920, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4132, PETRI_PLACES=135, PETRI_TRANSITIONS=292}
[2024-11-24 00:07:21,616 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 107 predicate places.
[2024-11-24 00:07:21,616 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 292 transitions, 4132 flow
[2024-11-24 00:07:21,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:21,617 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:21,618 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:21,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-24 00:07:21,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2024-11-24 00:07:21,818 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:21,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:21,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2083647794, now seen corresponding path program 4 times
[2024-11-24 00:07:21,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:21,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890370593]
[2024-11-24 00:07:21,819 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 00:07:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:21,832 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 00:07:21,832 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:21,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:21,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890370593]
[2024-11-24 00:07:21,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890370593] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:07:21,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:07:21,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-24 00:07:21,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523194250]
[2024-11-24 00:07:21,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:22,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:07:22,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:22,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:07:22,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-24 00:07:22,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:22,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 292 transitions, 4132 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:22,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:22,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:22,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:22,714 INFO L124 PetriNetUnfolderBase]: 2525/3743 cut-off events.
[2024-11-24 00:07:22,714 INFO L125 PetriNetUnfolderBase]: For 57887/57887 co-relation queries the response was YES.
[2024-11-24 00:07:22,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27628 conditions, 3743 events. 2525/3743 cut-off events. For 57887/57887 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 18137 event pairs, 618 based on Foata normal form. 8/3751 useless extension candidates. Maximal degree in co-relation 27071. Up to 2125 conditions per place.
[2024-11-24 00:07:22,753 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 278 selfloop transitions, 75 changer transitions 6/360 dead transitions.
[2024-11-24 00:07:22,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 360 transitions, 5502 flow
[2024-11-24 00:07:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 00:07:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 00:07:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions.
[2024-11-24 00:07:22,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58
[2024-11-24 00:07:22,754 INFO L175 Difference]: Start difference. First operand has 135 places, 292 transitions, 4132 flow. Second operand 6 states and 87 transitions.
[2024-11-24 00:07:22,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 360 transitions, 5502 flow
[2024-11-24 00:07:23,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 360 transitions, 5196 flow, removed 153 selfloop flow, removed 0 redundant places.
[2024-11-24 00:07:23,085 INFO L231 Difference]: Finished difference. Result has 142 places, 297 transitions, 4131 flow
[2024-11-24 00:07:23,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3848, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4131, PETRI_PLACES=142, PETRI_TRANSITIONS=297}
[2024-11-24 00:07:23,086 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 114 predicate places.
[2024-11-24 00:07:23,087 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 297 transitions, 4131 flow
[2024-11-24 00:07:23,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:23,087 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:23,087 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:23,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-11-24 00:07:23,087 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:23,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:23,088 INFO L85 PathProgramCache]: Analyzing trace with hash -7784350, now seen corresponding path program 4 times
[2024-11-24 00:07:23,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:23,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88338451]
[2024-11-24 00:07:23,088 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 00:07:23,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:23,105 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 00:07:23,106 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:23,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:23,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88338451]
[2024-11-24 00:07:23,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88338451] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:23,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480320536]
[2024-11-24 00:07:23,270 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 00:07:23,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:23,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:23,272 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:23,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-24 00:07:23,345 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 00:07:23,345 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:23,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:23,347 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:23,463 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:23,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480320536] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:23,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:07:23,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11
[2024-11-24 00:07:23,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951789632]
[2024-11-24 00:07:23,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:23,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 00:07:23,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:23,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 00:07:23,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2024-11-24 00:07:23,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:23,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 297 transitions, 4131 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:23,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:23,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:23,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:24,618 INFO L124 PetriNetUnfolderBase]: 3140/4653 cut-off events.
[2024-11-24 00:07:24,619 INFO L125 PetriNetUnfolderBase]: For 71875/71875 co-relation queries the response was YES.
[2024-11-24 00:07:24,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34224 conditions, 4653 events. 3140/4653 cut-off events. For 71875/71875 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 23429 event pairs, 498 based on Foata normal form. 13/4666 useless extension candidates. Maximal degree in co-relation 33798. Up to 1935 conditions per place.
[2024-11-24 00:07:24,677 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 302 selfloop transitions, 198 changer transitions 3/504 dead transitions.
[2024-11-24 00:07:24,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 504 transitions, 8052 flow
[2024-11-24 00:07:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 00:07:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 00:07:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions.
[2024-11-24 00:07:24,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5828571428571429
[2024-11-24 00:07:24,679 INFO L175 Difference]: Start difference. First operand has 142 places, 297 transitions, 4131 flow. Second operand 7 states and 102 transitions.
[2024-11-24 00:07:24,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 504 transitions, 8052 flow
[2024-11-24 00:07:25,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 504 transitions, 7767 flow, removed 50 selfloop flow, removed 2 redundant places.
[2024-11-24 00:07:25,138 INFO L231 Difference]: Finished difference. Result has 151 places, 417 transitions, 6607 flow
[2024-11-24 00:07:25,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3976, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6607, PETRI_PLACES=151, PETRI_TRANSITIONS=417}
[2024-11-24 00:07:25,139 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 123 predicate places.
[2024-11-24 00:07:25,139 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 417 transitions, 6607 flow
[2024-11-24 00:07:25,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:25,139 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:25,140 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:25,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-24 00:07:25,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:25,344 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:25,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:25,345 INFO L85 PathProgramCache]: Analyzing trace with hash -917349056, now seen corresponding path program 5 times
[2024-11-24 00:07:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:25,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207147331]
[2024-11-24 00:07:25,345 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 00:07:25,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:25,368 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:25,368 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:25,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207147331]
[2024-11-24 00:07:25,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207147331] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925455296]
[2024-11-24 00:07:25,552 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 00:07:25,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:25,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:25,554 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:25,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-24 00:07:25,631 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:25,631 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:25,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:25,633 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:25,782 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:25,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925455296] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:25,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:07:25,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 17
[2024-11-24 00:07:25,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592392543]
[2024-11-24 00:07:25,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:25,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:07:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:25,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:07:25,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272
[2024-11-24 00:07:25,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:25,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 417 transitions, 6607 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:25,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:25,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:25,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:27,137 INFO L124 PetriNetUnfolderBase]: 3647/5418 cut-off events.
[2024-11-24 00:07:27,137 INFO L125 PetriNetUnfolderBase]: For 95738/95738 co-relation queries the response was YES.
[2024-11-24 00:07:27,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43286 conditions, 5418 events. 3647/5418 cut-off events. For 95738/95738 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 28185 event pairs, 511 based on Foata normal form. 26/5444 useless extension candidates. Maximal degree in co-relation 43013. Up to 1725 conditions per place.
[2024-11-24 00:07:27,183 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 357 selfloop transitions, 210 changer transitions 2/570 dead transitions.
[2024-11-24 00:07:27,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 570 transitions, 9897 flow
[2024-11-24 00:07:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-24 00:07:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-24 00:07:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions.
[2024-11-24 00:07:27,185 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.615
[2024-11-24 00:07:27,185 INFO L175 Difference]: Start difference. First operand has 151 places, 417 transitions, 6607 flow. Second operand 8 states and 123 transitions.
[2024-11-24 00:07:27,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 570 transitions, 9897 flow
[2024-11-24 00:07:27,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 570 transitions, 9735 flow, removed 81 selfloop flow, removed 0 redundant places.
[2024-11-24 00:07:27,685 INFO L231 Difference]: Finished difference. Result has 163 places, 465 transitions, 8210 flow
[2024-11-24 00:07:27,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=6477, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8210, PETRI_PLACES=163, PETRI_TRANSITIONS=465}
[2024-11-24 00:07:27,686 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 135 predicate places.
[2024-11-24 00:07:27,687 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 465 transitions, 8210 flow
[2024-11-24 00:07:27,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:27,687 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:27,687 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:27,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2024-11-24 00:07:27,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2024-11-24 00:07:27,887 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:27,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:27,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1785318697, now seen corresponding path program 3 times
[2024-11-24 00:07:27,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:27,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767954355]
[2024-11-24 00:07:27,888 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:07:27,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:27,907 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 00:07:27,907 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:28,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:28,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767954355]
[2024-11-24 00:07:28,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767954355] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:28,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114146803]
[2024-11-24 00:07:28,088 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:07:28,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:28,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:28,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:28,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-24 00:07:28,194 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 00:07:28,194 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:28,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:28,200 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:28,359 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 00:07:28,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114146803] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:07:28,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:07:28,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 8
[2024-11-24 00:07:28,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128192429]
[2024-11-24 00:07:28,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:28,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:07:28,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:28,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:07:28,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-24 00:07:28,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:28,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 465 transitions, 8210 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:28,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:28,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:28,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:29,813 INFO L124 PetriNetUnfolderBase]: 3640/5444 cut-off events.
[2024-11-24 00:07:29,813 INFO L125 PetriNetUnfolderBase]: For 111404/111404 co-relation queries the response was YES.
[2024-11-24 00:07:29,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44977 conditions, 5444 events. 3640/5444 cut-off events. For 111404/111404 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 28793 event pairs, 924 based on Foata normal form. 24/5468 useless extension candidates. Maximal degree in co-relation 44702. Up to 3647 conditions per place.
[2024-11-24 00:07:29,881 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 433 selfloop transitions, 90 changer transitions 19/543 dead transitions.
[2024-11-24 00:07:29,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 543 transitions, 10280 flow
[2024-11-24 00:07:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 00:07:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 00:07:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions.
[2024-11-24 00:07:29,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286
[2024-11-24 00:07:29,883 INFO L175 Difference]: Start difference. First operand has 163 places, 465 transitions, 8210 flow. Second operand 7 states and 96 transitions.
[2024-11-24 00:07:29,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 543 transitions, 10280 flow
[2024-11-24 00:07:30,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 543 transitions, 10088 flow, removed 65 selfloop flow, removed 1 redundant places.
[2024-11-24 00:07:30,673 INFO L231 Difference]: Finished difference. Result has 172 places, 465 transitions, 8333 flow
[2024-11-24 00:07:30,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=7953, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8333, PETRI_PLACES=172, PETRI_TRANSITIONS=465}
[2024-11-24 00:07:30,674 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 144 predicate places.
[2024-11-24 00:07:30,674 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 465 transitions, 8333 flow
[2024-11-24 00:07:30,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:30,674 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:30,674 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:30,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-24 00:07:30,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2024-11-24 00:07:30,875 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:30,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:30,875 INFO L85 PathProgramCache]: Analyzing trace with hash 136449778, now seen corresponding path program 5 times
[2024-11-24 00:07:30,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:30,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086656126]
[2024-11-24 00:07:30,875 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 00:07:30,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:30,885 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:30,885 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:30,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:30,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086656126]
[2024-11-24 00:07:30,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086656126] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:07:30,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:07:30,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-24 00:07:30,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958532951]
[2024-11-24 00:07:30,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:30,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 00:07:30,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:30,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 00:07:30,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-24 00:07:30,983 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:30,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 465 transitions, 8333 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:30,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:30,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:30,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:32,373 INFO L124 PetriNetUnfolderBase]: 3604/5406 cut-off events.
[2024-11-24 00:07:32,373 INFO L125 PetriNetUnfolderBase]: For 107221/107221 co-relation queries the response was YES.
[2024-11-24 00:07:32,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44263 conditions, 5406 events. 3604/5406 cut-off events. For 107221/107221 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 28683 event pairs, 969 based on Foata normal form. 16/5422 useless extension candidates. Maximal degree in co-relation 44016. Up to 3647 conditions per place.
[2024-11-24 00:07:32,424 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 438 selfloop transitions, 70 changer transitions 16/525 dead transitions.
[2024-11-24 00:07:32,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 525 transitions, 10087 flow
[2024-11-24 00:07:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 00:07:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 00:07:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions.
[2024-11-24 00:07:32,425 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6
[2024-11-24 00:07:32,425 INFO L175 Difference]: Start difference. First operand has 172 places, 465 transitions, 8333 flow. Second operand 6 states and 90 transitions.
[2024-11-24 00:07:32,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 525 transitions, 10087 flow
[2024-11-24 00:07:33,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 525 transitions, 9916 flow, removed 35 selfloop flow, removed 3 redundant places.
[2024-11-24 00:07:33,085 INFO L231 Difference]: Finished difference. Result has 174 places, 461 transitions, 8260 flow
[2024-11-24 00:07:33,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=8169, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8260, PETRI_PLACES=174, PETRI_TRANSITIONS=461}
[2024-11-24 00:07:33,086 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 146 predicate places.
[2024-11-24 00:07:33,086 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 461 transitions, 8260 flow
[2024-11-24 00:07:33,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:33,086 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:33,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:33,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2024-11-24 00:07:33,086 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:33,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:33,087 INFO L85 PathProgramCache]: Analyzing trace with hash 294555550, now seen corresponding path program 6 times
[2024-11-24 00:07:33,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:33,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319727854]
[2024-11-24 00:07:33,087 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-24 00:07:33,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:33,103 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-11-24 00:07:33,103 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:33,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:33,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319727854]
[2024-11-24 00:07:33,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319727854] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:33,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481946894]
[2024-11-24 00:07:33,329 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-24 00:07:33,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:33,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:33,331 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:33,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-24 00:07:33,410 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-11-24 00:07:33,410 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:33,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:33,413 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:33,545 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:33,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481946894] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:33,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:07:33,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 15
[2024-11-24 00:07:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587344315]
[2024-11-24 00:07:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:33,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 00:07:33,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:33,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 00:07:33,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210
[2024-11-24 00:07:33,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:33,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 461 transitions, 8260 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:33,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:33,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:33,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:34,784 INFO L124 PetriNetUnfolderBase]: 3607/5403 cut-off events.
[2024-11-24 00:07:34,785 INFO L125 PetriNetUnfolderBase]: For 104824/104824 co-relation queries the response was YES.
[2024-11-24 00:07:34,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44292 conditions, 5403 events. 3607/5403 cut-off events. For 104824/104824 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 28683 event pairs, 753 based on Foata normal form. 24/5427 useless extension candidates. Maximal degree in co-relation 44066. Up to 3024 conditions per place.
[2024-11-24 00:07:34,829 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 447 selfloop transitions, 77 changer transitions 2/527 dead transitions.
[2024-11-24 00:07:34,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 527 transitions, 10092 flow
[2024-11-24 00:07:34,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 00:07:34,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 00:07:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions.
[2024-11-24 00:07:34,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334
[2024-11-24 00:07:34,830 INFO L175 Difference]: Start difference. First operand has 174 places, 461 transitions, 8260 flow. Second operand 6 states and 86 transitions.
[2024-11-24 00:07:34,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 527 transitions, 10092 flow
[2024-11-24 00:07:35,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 527 transitions, 9942 flow, removed 5 selfloop flow, removed 5 redundant places.
[2024-11-24 00:07:35,424 INFO L231 Difference]: Finished difference. Result has 175 places, 470 transitions, 8504 flow
[2024-11-24 00:07:35,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=8110, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8504, PETRI_PLACES=175, PETRI_TRANSITIONS=470}
[2024-11-24 00:07:35,426 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 147 predicate places.
[2024-11-24 00:07:35,426 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 470 transitions, 8504 flow
[2024-11-24 00:07:35,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:35,426 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:35,426 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:35,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-24 00:07:35,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:35,627 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:35,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1853345624, now seen corresponding path program 7 times
[2024-11-24 00:07:35,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:35,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619365493]
[2024-11-24 00:07:35,627 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-24 00:07:35,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:07:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:35,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:35,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619365493]
[2024-11-24 00:07:35,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619365493] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:35,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742994748]
[2024-11-24 00:07:35,746 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-24 00:07:35,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:35,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:35,749 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:35,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-24 00:07:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:07:35,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:35,825 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:35,931 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:36,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742994748] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:36,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:07:36,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 9
[2024-11-24 00:07:36,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842913403]
[2024-11-24 00:07:36,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:36,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 00:07:36,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:36,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 00:07:36,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2024-11-24 00:07:36,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:36,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 470 transitions, 8504 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:36,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:36,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:36,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:37,316 INFO L124 PetriNetUnfolderBase]: 3890/5879 cut-off events.
[2024-11-24 00:07:37,316 INFO L125 PetriNetUnfolderBase]: For 118767/118767 co-relation queries the response was YES.
[2024-11-24 00:07:37,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49051 conditions, 5879 events. 3890/5879 cut-off events. For 118767/118767 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 32244 event pairs, 468 based on Foata normal form. 24/5903 useless extension candidates. Maximal degree in co-relation 48766. Up to 1910 conditions per place.
[2024-11-24 00:07:37,392 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 394 selfloop transitions, 210 changer transitions 2/607 dead transitions.
[2024-11-24 00:07:37,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 607 transitions, 11724 flow
[2024-11-24 00:07:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-24 00:07:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-24 00:07:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions.
[2024-11-24 00:07:37,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62
[2024-11-24 00:07:37,393 INFO L175 Difference]: Start difference. First operand has 175 places, 470 transitions, 8504 flow. Second operand 8 states and 124 transitions.
[2024-11-24 00:07:37,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 607 transitions, 11724 flow
[2024-11-24 00:07:38,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 607 transitions, 11608 flow, removed 5 selfloop flow, removed 2 redundant places.
[2024-11-24 00:07:38,188 INFO L231 Difference]: Finished difference. Result has 185 places, 521 transitions, 10315 flow
[2024-11-24 00:07:38,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=8409, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10315, PETRI_PLACES=185, PETRI_TRANSITIONS=521}
[2024-11-24 00:07:38,189 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 157 predicate places.
[2024-11-24 00:07:38,189 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 521 transitions, 10315 flow
[2024-11-24 00:07:38,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:38,189 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:38,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:38,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2024-11-24 00:07:38,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:38,393 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:38,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:38,394 INFO L85 PathProgramCache]: Analyzing trace with hash -133082321, now seen corresponding path program 4 times
[2024-11-24 00:07:38,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:38,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141405743]
[2024-11-24 00:07:38,394 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 00:07:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:38,403 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 00:07:38,403 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:38,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:38,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141405743]
[2024-11-24 00:07:38,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141405743] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:38,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167549738]
[2024-11-24 00:07:38,515 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 00:07:38,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:38,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:38,517 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:38,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-24 00:07:38,617 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 00:07:38,617 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:38,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:38,619 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:38,719 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:38,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167549738] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:07:38,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 00:07:38,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13
[2024-11-24 00:07:38,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421824212]
[2024-11-24 00:07:38,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:07:38,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-24 00:07:38,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:38,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-24 00:07:38,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156
[2024-11-24 00:07:38,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:38,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 521 transitions, 10315 flow. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 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)
[2024-11-24 00:07:38,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:38,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:38,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:40,326 INFO L124 PetriNetUnfolderBase]: 3947/5976 cut-off events.
[2024-11-24 00:07:40,326 INFO L125 PetriNetUnfolderBase]: For 141542/141542 co-relation queries the response was YES.
[2024-11-24 00:07:40,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51833 conditions, 5976 events. 3947/5976 cut-off events. For 141542/141542 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 32989 event pairs, 1072 based on Foata normal form. 21/5997 useless extension candidates. Maximal degree in co-relation 51543. Up to 4158 conditions per place.
[2024-11-24 00:07:40,378 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 491 selfloop transitions, 112 changer transitions 5/609 dead transitions.
[2024-11-24 00:07:40,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 609 transitions, 12629 flow
[2024-11-24 00:07:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-24 00:07:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-11-24 00:07:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions.
[2024-11-24 00:07:40,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.504
[2024-11-24 00:07:40,379 INFO L175 Difference]: Start difference. First operand has 185 places, 521 transitions, 10315 flow. Second operand 10 states and 126 transitions.
[2024-11-24 00:07:40,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 609 transitions, 12629 flow
[2024-11-24 00:07:41,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 609 transitions, 12563 flow, removed 33 selfloop flow, removed 0 redundant places.
[2024-11-24 00:07:41,219 INFO L231 Difference]: Finished difference. Result has 198 places, 539 transitions, 10908 flow
[2024-11-24 00:07:41,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=10255, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10908, PETRI_PLACES=198, PETRI_TRANSITIONS=539}
[2024-11-24 00:07:41,220 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 170 predicate places.
[2024-11-24 00:07:41,220 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 539 transitions, 10908 flow
[2024-11-24 00:07:41,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 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)
[2024-11-24 00:07:41,220 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:41,220 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:41,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-24 00:07:41,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-11-24 00:07:41,420 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:41,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash 512303215, now seen corresponding path program 5 times
[2024-11-24 00:07:41,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:41,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721605212]
[2024-11-24 00:07:41,421 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 00:07:41,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:41,446 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:41,447 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:41,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:41,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721605212]
[2024-11-24 00:07:41,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721605212] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:41,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853474223]
[2024-11-24 00:07:41,671 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 00:07:41,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:41,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:41,673 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:41,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-24 00:07:41,743 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:41,743 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:41,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:41,746 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:41,861 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:42,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853474223] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:07:42,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 00:07:42,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17
[2024-11-24 00:07:42,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180715454]
[2024-11-24 00:07:42,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:07:42,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-11-24 00:07:42,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:42,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-11-24 00:07:42,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272
[2024-11-24 00:07:42,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:42,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 539 transitions, 10908 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:42,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:42,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:42,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:44,513 INFO L124 PetriNetUnfolderBase]: 3981/6023 cut-off events.
[2024-11-24 00:07:44,513 INFO L125 PetriNetUnfolderBase]: For 149010/149010 co-relation queries the response was YES.
[2024-11-24 00:07:44,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53266 conditions, 6023 events. 3981/6023 cut-off events. For 149010/149010 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 33573 event pairs, 636 based on Foata normal form. 25/6048 useless extension candidates. Maximal degree in co-relation 52967. Up to 2324 conditions per place.
[2024-11-24 00:07:44,583 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 618 selfloop transitions, 177 changer transitions 5/801 dead transitions.
[2024-11-24 00:07:44,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 801 transitions, 16792 flow
[2024-11-24 00:07:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-11-24 00:07:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2024-11-24 00:07:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 256 transitions.
[2024-11-24 00:07:44,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46545454545454545
[2024-11-24 00:07:44,585 INFO L175 Difference]: Start difference. First operand has 198 places, 539 transitions, 10908 flow. Second operand 22 states and 256 transitions.
[2024-11-24 00:07:44,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 801 transitions, 16792 flow
[2024-11-24 00:07:45,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 801 transitions, 16637 flow, removed 26 selfloop flow, removed 2 redundant places.
[2024-11-24 00:07:45,651 INFO L231 Difference]: Finished difference. Result has 229 places, 575 transitions, 11917 flow
[2024-11-24 00:07:45,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=10757, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11917, PETRI_PLACES=229, PETRI_TRANSITIONS=575}
[2024-11-24 00:07:45,652 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 201 predicate places.
[2024-11-24 00:07:45,652 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 575 transitions, 11917 flow
[2024-11-24 00:07:45,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:45,652 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:45,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:45,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-11-24 00:07:45,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-11-24 00:07:45,853 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:45,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:45,853 INFO L85 PathProgramCache]: Analyzing trace with hash -592003780, now seen corresponding path program 8 times
[2024-11-24 00:07:45,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:45,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648758052]
[2024-11-24 00:07:45,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:07:45,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:45,869 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:45,869 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:46,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648758052]
[2024-11-24 00:07:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648758052] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96784221]
[2024-11-24 00:07:46,027 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:07:46,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:46,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:46,029 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:46,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-24 00:07:46,095 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:46,095 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:46,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:46,098 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:46,191 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:46,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96784221] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:46,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:07:46,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 14
[2024-11-24 00:07:46,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491492473]
[2024-11-24 00:07:46,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:46,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:07:46,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:46,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:07:46,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2024-11-24 00:07:46,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:46,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 575 transitions, 11917 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:46,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:46,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:46,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:47,709 INFO L124 PetriNetUnfolderBase]: 3955/5997 cut-off events.
[2024-11-24 00:07:47,709 INFO L125 PetriNetUnfolderBase]: For 156178/156178 co-relation queries the response was YES.
[2024-11-24 00:07:47,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54947 conditions, 5997 events. 3955/5997 cut-off events. For 156178/156178 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 33290 event pairs, 800 based on Foata normal form. 26/6023 useless extension candidates. Maximal degree in co-relation 54702. Up to 3352 conditions per place.
[2024-11-24 00:07:47,806 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 524 selfloop transitions, 104 changer transitions 2/631 dead transitions.
[2024-11-24 00:07:47,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 631 transitions, 13785 flow
[2024-11-24 00:07:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 00:07:47,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 00:07:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions.
[2024-11-24 00:07:47,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58
[2024-11-24 00:07:47,808 INFO L175 Difference]: Start difference. First operand has 229 places, 575 transitions, 11917 flow. Second operand 6 states and 87 transitions.
[2024-11-24 00:07:47,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 631 transitions, 13785 flow
[2024-11-24 00:07:49,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 631 transitions, 13510 flow, removed 44 selfloop flow, removed 6 redundant places.
[2024-11-24 00:07:49,027 INFO L231 Difference]: Finished difference. Result has 229 places, 575 transitions, 11887 flow
[2024-11-24 00:07:49,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=11660, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11887, PETRI_PLACES=229, PETRI_TRANSITIONS=575}
[2024-11-24 00:07:49,028 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 201 predicate places.
[2024-11-24 00:07:49,028 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 575 transitions, 11887 flow
[2024-11-24 00:07:49,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:49,028 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:49,028 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:49,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2024-11-24 00:07:49,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:49,229 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:49,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:49,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1244768324, now seen corresponding path program 9 times
[2024-11-24 00:07:49,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:49,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617029404]
[2024-11-24 00:07:49,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:07:49,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:49,239 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 00:07:49,239 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:49,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617029404]
[2024-11-24 00:07:49,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617029404] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050557096]
[2024-11-24 00:07:49,379 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:07:49,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:49,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:49,381 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:49,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-24 00:07:49,451 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 00:07:49,451 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:49,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:49,456 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:49,555 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:49,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050557096] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:49,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:07:49,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 15
[2024-11-24 00:07:49,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704051291]
[2024-11-24 00:07:49,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:49,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 00:07:49,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:49,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 00:07:49,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210
[2024-11-24 00:07:49,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:49,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 575 transitions, 11887 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:49,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:49,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:49,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:51,066 INFO L124 PetriNetUnfolderBase]: 3931/5950 cut-off events.
[2024-11-24 00:07:51,066 INFO L125 PetriNetUnfolderBase]: For 155192/155192 co-relation queries the response was YES.
[2024-11-24 00:07:51,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54535 conditions, 5950 events. 3931/5950 cut-off events. For 155192/155192 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 32916 event pairs, 817 based on Foata normal form. 24/5974 useless extension candidates. Maximal degree in co-relation 54303. Up to 3243 conditions per place.
[2024-11-24 00:07:51,128 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 443 selfloop transitions, 176 changer transitions 2/622 dead transitions.
[2024-11-24 00:07:51,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 622 transitions, 13705 flow
[2024-11-24 00:07:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 00:07:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 00:07:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions.
[2024-11-24 00:07:51,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667
[2024-11-24 00:07:51,129 INFO L175 Difference]: Start difference. First operand has 229 places, 575 transitions, 11887 flow. Second operand 6 states and 85 transitions.
[2024-11-24 00:07:51,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 622 transitions, 13705 flow
[2024-11-24 00:07:52,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 622 transitions, 13575 flow, removed 8 selfloop flow, removed 3 redundant places.
[2024-11-24 00:07:52,411 INFO L231 Difference]: Finished difference. Result has 234 places, 577 transitions, 12348 flow
[2024-11-24 00:07:52,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=11759, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12348, PETRI_PLACES=234, PETRI_TRANSITIONS=577}
[2024-11-24 00:07:52,412 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 206 predicate places.
[2024-11-24 00:07:52,412 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 577 transitions, 12348 flow
[2024-11-24 00:07:52,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:52,412 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:52,412 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:52,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-11-24 00:07:52,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:52,613 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:52,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:52,613 INFO L85 PathProgramCache]: Analyzing trace with hash -704843940, now seen corresponding path program 10 times
[2024-11-24 00:07:52,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:52,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765703085]
[2024-11-24 00:07:52,613 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 00:07:52,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:52,622 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 00:07:52,622 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:52,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:52,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765703085]
[2024-11-24 00:07:52,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765703085] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:52,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774534154]
[2024-11-24 00:07:52,739 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 00:07:52,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:52,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:52,741 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:52,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-24 00:07:52,814 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 00:07:52,814 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:52,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:52,818 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:52,949 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774534154] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:53,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 00:07:53,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 13
[2024-11-24 00:07:53,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715935182]
[2024-11-24 00:07:53,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:07:53,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 00:07:53,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:53,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 00:07:53,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2024-11-24 00:07:53,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:53,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 577 transitions, 12348 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:53,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:53,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:53,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:54,630 INFO L124 PetriNetUnfolderBase]: 3901/5856 cut-off events.
[2024-11-24 00:07:54,630 INFO L125 PetriNetUnfolderBase]: For 158082/158082 co-relation queries the response was YES.
[2024-11-24 00:07:54,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55360 conditions, 5856 events. 3901/5856 cut-off events. For 158082/158082 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 31847 event pairs, 815 based on Foata normal form. 26/5882 useless extension candidates. Maximal degree in co-relation 55125. Up to 3208 conditions per place.
[2024-11-24 00:07:54,689 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 441 selfloop transitions, 166 changer transitions 2/610 dead transitions.
[2024-11-24 00:07:54,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 610 transitions, 13880 flow
[2024-11-24 00:07:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 00:07:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 00:07:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions.
[2024-11-24 00:07:54,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334
[2024-11-24 00:07:54,690 INFO L175 Difference]: Start difference. First operand has 234 places, 577 transitions, 12348 flow. Second operand 6 states and 86 transitions.
[2024-11-24 00:07:54,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 610 transitions, 13880 flow
[2024-11-24 00:07:55,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 610 transitions, 13828 flow, removed 15 selfloop flow, removed 2 redundant places.
[2024-11-24 00:07:55,797 INFO L231 Difference]: Finished difference. Result has 235 places, 568 transitions, 12479 flow
[2024-11-24 00:07:55,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=12147, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12479, PETRI_PLACES=235, PETRI_TRANSITIONS=568}
[2024-11-24 00:07:55,798 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 207 predicate places.
[2024-11-24 00:07:55,798 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 568 transitions, 12479 flow
[2024-11-24 00:07:55,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:55,798 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:55,799 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:55,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2024-11-24 00:07:55,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:55,999 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:07:55,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:07:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash -394869174, now seen corresponding path program 11 times
[2024-11-24 00:07:56,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:07:56,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322399202]
[2024-11-24 00:07:56,000 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 00:07:56,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:07:56,008 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:56,008 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:56,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:07:56,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322399202]
[2024-11-24 00:07:56,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322399202] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:07:56,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899536181]
[2024-11-24 00:07:56,150 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 00:07:56,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:07:56,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:07:56,153 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:07:56,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-11-24 00:07:56,237 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:07:56,238 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:07:56,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-24 00:07:56,241 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:07:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:56,312 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:07:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:07:56,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899536181] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:07:56,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 00:07:56,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 14
[2024-11-24 00:07:56,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824036393]
[2024-11-24 00:07:56,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:07:56,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-24 00:07:56,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:07:56,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-24 00:07:56,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182
[2024-11-24 00:07:56,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:07:56,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 568 transitions, 12479 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:56,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:07:56,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:07:56,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:07:58,435 INFO L124 PetriNetUnfolderBase]: 4423/6705 cut-off events.
[2024-11-24 00:07:58,435 INFO L125 PetriNetUnfolderBase]: For 185250/185250 co-relation queries the response was YES.
[2024-11-24 00:07:58,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63553 conditions, 6705 events. 4423/6705 cut-off events. For 185250/185250 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 38138 event pairs, 609 based on Foata normal form. 18/6723 useless extension candidates. Maximal degree in co-relation 63319. Up to 2475 conditions per place.
[2024-11-24 00:07:58,522 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 377 selfloop transitions, 459 changer transitions 8/845 dead transitions.
[2024-11-24 00:07:58,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 845 transitions, 18973 flow
[2024-11-24 00:07:58,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2024-11-24 00:07:58,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2024-11-24 00:07:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 265 transitions.
[2024-11-24 00:07:58,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047
[2024-11-24 00:07:58,524 INFO L175 Difference]: Start difference. First operand has 235 places, 568 transitions, 12479 flow. Second operand 21 states and 265 transitions.
[2024-11-24 00:07:58,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 845 transitions, 18973 flow
[2024-11-24 00:07:59,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 845 transitions, 18611 flow, removed 2 selfloop flow, removed 4 redundant places.
[2024-11-24 00:07:59,911 INFO L231 Difference]: Finished difference. Result has 260 places, 700 transitions, 16631 flow
[2024-11-24 00:07:59,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=12143, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=16631, PETRI_PLACES=260, PETRI_TRANSITIONS=700}
[2024-11-24 00:07:59,911 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 232 predicate places.
[2024-11-24 00:07:59,911 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 700 transitions, 16631 flow
[2024-11-24 00:07:59,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:07:59,911 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:07:59,912 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:07:59,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-11-24 00:08:00,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:08:00,112 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:08:00,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:08:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1640295728, now seen corresponding path program 12 times
[2024-11-24 00:08:00,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:08:00,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017245268]
[2024-11-24 00:08:00,113 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-24 00:08:00,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:08:00,121 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-11-24 00:08:00,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:08:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:00,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:08:00,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017245268]
[2024-11-24 00:08:00,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017245268] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:08:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456614942]
[2024-11-24 00:08:00,279 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-24 00:08:00,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:08:00,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:08:00,281 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:08:00,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-11-24 00:08:00,348 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-11-24 00:08:00,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:08:00,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-24 00:08:00,350 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:08:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:00,450 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:08:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:00,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456614942] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:08:00,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 00:08:00,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 15
[2024-11-24 00:08:00,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339603240]
[2024-11-24 00:08:00,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:08:00,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-24 00:08:00,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:08:00,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-24 00:08:00,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210
[2024-11-24 00:08:00,632 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:08:00,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 700 transitions, 16631 flow. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:08:00,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:08:00,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:08:00,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:08:03,069 INFO L124 PetriNetUnfolderBase]: 5315/7936 cut-off events.
[2024-11-24 00:08:03,070 INFO L125 PetriNetUnfolderBase]: For 277192/277192 co-relation queries the response was YES.
[2024-11-24 00:08:03,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82450 conditions, 7936 events. 5315/7936 cut-off events. For 277192/277192 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 45261 event pairs, 1068 based on Foata normal form. 37/7973 useless extension candidates. Maximal degree in co-relation 82192. Up to 5935 conditions per place.
[2024-11-24 00:08:03,185 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 667 selfloop transitions, 396 changer transitions 3/1067 dead transitions.
[2024-11-24 00:08:03,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 1067 transitions, 26681 flow
[2024-11-24 00:08:03,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2024-11-24 00:08:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2024-11-24 00:08:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 249 transitions.
[2024-11-24 00:08:03,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4742857142857143
[2024-11-24 00:08:03,187 INFO L175 Difference]: Start difference. First operand has 260 places, 700 transitions, 16631 flow. Second operand 21 states and 249 transitions.
[2024-11-24 00:08:03,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 1067 transitions, 26681 flow
[2024-11-24 00:08:05,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1067 transitions, 25979 flow, removed 329 selfloop flow, removed 1 redundant places.
[2024-11-24 00:08:05,583 INFO L231 Difference]: Finished difference. Result has 293 places, 916 transitions, 23403 flow
[2024-11-24 00:08:05,583 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=16113, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=23403, PETRI_PLACES=293, PETRI_TRANSITIONS=916}
[2024-11-24 00:08:05,584 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 265 predicate places.
[2024-11-24 00:08:05,584 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 916 transitions, 23403 flow
[2024-11-24 00:08:05,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:08:05,584 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:08:05,585 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:08:05,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-11-24 00:08:05,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2024-11-24 00:08:05,789 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:08:05,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:08:05,790 INFO L85 PathProgramCache]: Analyzing trace with hash 758535484, now seen corresponding path program 13 times
[2024-11-24 00:08:05,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:08:05,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177363184]
[2024-11-24 00:08:05,791 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-24 00:08:05,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:08:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:08:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:05,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:08:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177363184]
[2024-11-24 00:08:05,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177363184] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:08:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728835904]
[2024-11-24 00:08:05,933 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-24 00:08:05,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:08:05,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:08:05,935 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:08:05,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-11-24 00:08:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 00:08:06,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:08:06,005 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:08:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:06,140 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:08:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:06,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728835904] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:08:06,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 00:08:06,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15
[2024-11-24 00:08:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639966765]
[2024-11-24 00:08:06,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:08:06,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-24 00:08:06,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:08:06,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-24 00:08:06,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210
[2024-11-24 00:08:06,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:08:06,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 916 transitions, 23403 flow. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:08:06,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:08:06,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:08:06,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:08:11,238 INFO L124 PetriNetUnfolderBase]: 6877/10418 cut-off events.
[2024-11-24 00:08:11,238 INFO L125 PetriNetUnfolderBase]: For 391990/391990 co-relation queries the response was YES.
[2024-11-24 00:08:11,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112292 conditions, 10418 events. 6877/10418 cut-off events. For 391990/391990 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 63783 event pairs, 918 based on Foata normal form. 53/10471 useless extension candidates. Maximal degree in co-relation 112087. Up to 4528 conditions per place.
[2024-11-24 00:08:11,443 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 689 selfloop transitions, 766 changer transitions 3/1459 dead transitions.
[2024-11-24 00:08:11,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 1459 transitions, 37171 flow
[2024-11-24 00:08:11,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2024-11-24 00:08:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2024-11-24 00:08:11,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 356 transitions.
[2024-11-24 00:08:11,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5274074074074074
[2024-11-24 00:08:11,446 INFO L175 Difference]: Start difference. First operand has 293 places, 916 transitions, 23403 flow. Second operand 27 states and 356 transitions.
[2024-11-24 00:08:11,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 1459 transitions, 37171 flow
[2024-11-24 00:08:16,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1459 transitions, 35723 flow, removed 667 selfloop flow, removed 6 redundant places.
[2024-11-24 00:08:16,119 INFO L231 Difference]: Finished difference. Result has 327 places, 1197 transitions, 32130 flow
[2024-11-24 00:08:16,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=22172, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=914, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=32130, PETRI_PLACES=327, PETRI_TRANSITIONS=1197}
[2024-11-24 00:08:16,120 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 299 predicate places.
[2024-11-24 00:08:16,120 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 1197 transitions, 32130 flow
[2024-11-24 00:08:16,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:08:16,121 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:08:16,121 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:08:16,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2024-11-24 00:08:16,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2024-11-24 00:08:16,321 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:08:16,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:08:16,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1182998928, now seen corresponding path program 14 times
[2024-11-24 00:08:16,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:08:16,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67558024]
[2024-11-24 00:08:16,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:08:16,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:08:16,336 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:08:16,336 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:08:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:16,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:08:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67558024]
[2024-11-24 00:08:16,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67558024] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:08:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337252596]
[2024-11-24 00:08:16,525 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 00:08:16,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:08:16,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:08:16,527 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:08:16,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-11-24 00:08:16,601 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:08:16,601 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:08:16,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:08:16,606 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:08:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:16,656 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 00:08:16,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337252596] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:08:16,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:08:16,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9
[2024-11-24 00:08:16,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976401715]
[2024-11-24 00:08:16,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:08:16,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:08:16,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:08:16,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:08:16,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2024-11-24 00:08:16,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:08:16,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 1197 transitions, 32130 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:08:16,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:08:16,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:08:16,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:08:22,078 INFO L124 PetriNetUnfolderBase]: 6900/10451 cut-off events.
[2024-11-24 00:08:22,078 INFO L125 PetriNetUnfolderBase]: For 416671/416671 co-relation queries the response was YES.
[2024-11-24 00:08:22,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117143 conditions, 10451 events. 6900/10451 cut-off events. For 416671/416671 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 63816 event pairs, 1858 based on Foata normal form. 2/10453 useless extension candidates. Maximal degree in co-relation 116775. Up to 9746 conditions per place.
[2024-11-24 00:08:22,226 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 1120 selfloop transitions, 114 changer transitions 5/1240 dead transitions.
[2024-11-24 00:08:22,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1240 transitions, 35399 flow
[2024-11-24 00:08:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 00:08:22,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 00:08:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions.
[2024-11-24 00:08:22,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4685714285714286
[2024-11-24 00:08:22,227 INFO L175 Difference]: Start difference. First operand has 327 places, 1197 transitions, 32130 flow. Second operand 7 states and 82 transitions.
[2024-11-24 00:08:22,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 1240 transitions, 35399 flow
[2024-11-24 00:08:28,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 1240 transitions, 34210 flow, removed 460 selfloop flow, removed 5 redundant places.
[2024-11-24 00:08:28,093 INFO L231 Difference]: Finished difference. Result has 330 places, 1205 transitions, 31558 flow
[2024-11-24 00:08:28,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=31122, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1089, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31558, PETRI_PLACES=330, PETRI_TRANSITIONS=1205}
[2024-11-24 00:08:28,094 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 302 predicate places.
[2024-11-24 00:08:28,094 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 1205 transitions, 31558 flow
[2024-11-24 00:08:28,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:08:28,095 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:08:28,095 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:08:28,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2024-11-24 00:08:28,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2024-11-24 00:08:28,295 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:08:28,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:08:28,296 INFO L85 PathProgramCache]: Analyzing trace with hash -931407420, now seen corresponding path program 15 times
[2024-11-24 00:08:28,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:08:28,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829604885]
[2024-11-24 00:08:28,296 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:08:28,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:08:28,309 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 00:08:28,309 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:08:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:28,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:08:28,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829604885]
[2024-11-24 00:08:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829604885] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:08:28,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273848875]
[2024-11-24 00:08:28,485 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 00:08:28,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:08:28,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:08:28,487 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:08:28,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2024-11-24 00:08:28,563 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 00:08:28,564 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:08:28,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-11-24 00:08:28,568 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:08:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:28,776 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 00:08:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:29,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273848875] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 00:08:29,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 00:08:29,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 17
[2024-11-24 00:08:29,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829056059]
[2024-11-24 00:08:29,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 00:08:29,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-11-24 00:08:29,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:08:29,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-11-24 00:08:29,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272
[2024-11-24 00:08:29,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:08:29,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 1205 transitions, 31558 flow. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:08:29,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:08:29,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:08:29,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:08:35,575 INFO L124 PetriNetUnfolderBase]: 7332/11368 cut-off events.
[2024-11-24 00:08:35,575 INFO L125 PetriNetUnfolderBase]: For 404096/404096 co-relation queries the response was YES.
[2024-11-24 00:08:35,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121060 conditions, 11368 events. 7332/11368 cut-off events. For 404096/404096 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 73475 event pairs, 1199 based on Foata normal form. 30/11398 useless extension candidates. Maximal degree in co-relation 120663. Up to 5588 conditions per place.
[2024-11-24 00:08:35,750 INFO L140 encePairwiseOnDemand]: 15/25 looper letters, 669 selfloop transitions, 826 changer transitions 4/1500 dead transitions.
[2024-11-24 00:08:35,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 1500 transitions, 40029 flow
[2024-11-24 00:08:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2024-11-24 00:08:35,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2024-11-24 00:08:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 253 transitions.
[2024-11-24 00:08:35,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.506
[2024-11-24 00:08:35,752 INFO L175 Difference]: Start difference. First operand has 330 places, 1205 transitions, 31558 flow. Second operand 20 states and 253 transitions.
[2024-11-24 00:08:35,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 1500 transitions, 40029 flow
[2024-11-24 00:08:41,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 1500 transitions, 39881 flow, removed 8 selfloop flow, removed 2 redundant places.
[2024-11-24 00:08:41,135 INFO L231 Difference]: Finished difference. Result has 354 places, 1333 transitions, 37174 flow
[2024-11-24 00:08:41,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=31392, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=708, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=37174, PETRI_PLACES=354, PETRI_TRANSITIONS=1333}
[2024-11-24 00:08:41,136 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 326 predicate places.
[2024-11-24 00:08:41,136 INFO L471 AbstractCegarLoop]: Abstraction has has 354 places, 1333 transitions, 37174 flow
[2024-11-24 00:08:41,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:08:41,136 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:08:41,136 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:08:41,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2024-11-24 00:08:41,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2024-11-24 00:08:41,337 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:08:41,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:08:41,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1944570118, now seen corresponding path program 6 times
[2024-11-24 00:08:41,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:08:41,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770156658]
[2024-11-24 00:08:41,338 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-24 00:08:41,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:08:41,346 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-11-24 00:08:41,346 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:08:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:41,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:08:41,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770156658]
[2024-11-24 00:08:41,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770156658] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:08:41,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177847704]
[2024-11-24 00:08:41,496 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-24 00:08:41,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:08:41,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:08:41,498 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:08:41,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2024-11-24 00:08:41,575 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-11-24 00:08:41,575 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:08:41,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-24 00:08:41,579 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:08:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:41,644 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 00:08:41,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177847704] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:08:41,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:08:41,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9
[2024-11-24 00:08:41,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448090978]
[2024-11-24 00:08:41,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:08:41,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:08:41,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:08:41,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:08:41,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2024-11-24 00:08:41,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:08:41,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 1333 transitions, 37174 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:08:41,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:08:41,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:08:41,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:08:46,516 INFO L124 PetriNetUnfolderBase]: 7332/11406 cut-off events.
[2024-11-24 00:08:46,516 INFO L125 PetriNetUnfolderBase]: For 445219/445219 co-relation queries the response was YES.
[2024-11-24 00:08:46,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126722 conditions, 11406 events. 7332/11406 cut-off events. For 445219/445219 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 74053 event pairs, 1974 based on Foata normal form. 24/11430 useless extension candidates. Maximal degree in co-relation 126317. Up to 10541 conditions per place.
[2024-11-24 00:08:46,685 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 1254 selfloop transitions, 111 changer transitions 14/1380 dead transitions.
[2024-11-24 00:08:46,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 1380 transitions, 40426 flow
[2024-11-24 00:08:46,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 00:08:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 00:08:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions.
[2024-11-24 00:08:46,686 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5371428571428571
[2024-11-24 00:08:46,686 INFO L175 Difference]: Start difference. First operand has 354 places, 1333 transitions, 37174 flow. Second operand 7 states and 94 transitions.
[2024-11-24 00:08:46,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 1380 transitions, 40426 flow
[2024-11-24 00:08:53,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 1380 transitions, 39994 flow, removed 110 selfloop flow, removed 6 redundant places.
[2024-11-24 00:08:53,216 INFO L231 Difference]: Finished difference. Result has 357 places, 1333 transitions, 37009 flow
[2024-11-24 00:08:53,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=36711, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37009, PETRI_PLACES=357, PETRI_TRANSITIONS=1333}
[2024-11-24 00:08:53,217 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 329 predicate places.
[2024-11-24 00:08:53,217 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 1333 transitions, 37009 flow
[2024-11-24 00:08:53,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:08:53,218 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:08:53,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:08:53,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2024-11-24 00:08:53,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2024-11-24 00:08:53,418 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:08:53,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:08:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1041088108, now seen corresponding path program 16 times
[2024-11-24 00:08:53,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:08:53,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915972873]
[2024-11-24 00:08:53,419 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 00:08:53,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:08:53,429 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 00:08:53,429 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:08:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:08:53,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:08:53,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915972873]
[2024-11-24 00:08:53,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915972873] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:08:53,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 00:08:53,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-24 00:08:53,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541530041]
[2024-11-24 00:08:53,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:08:53,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:08:53,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:08:53,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:08:53,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-11-24 00:08:53,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:08:53,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 1333 transitions, 37009 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:08:53,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:08:53,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:08:53,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:08:59,293 INFO L124 PetriNetUnfolderBase]: 7323/11383 cut-off events.
[2024-11-24 00:08:59,293 INFO L125 PetriNetUnfolderBase]: For 433881/433881 co-relation queries the response was YES.
[2024-11-24 00:08:59,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125229 conditions, 11383 events. 7323/11383 cut-off events. For 433881/433881 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 73641 event pairs, 1786 based on Foata normal form. 2/11385 useless extension candidates. Maximal degree in co-relation 124902. Up to 9016 conditions per place.
[2024-11-24 00:08:59,503 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 1269 selfloop transitions, 112 changer transitions 5/1387 dead transitions.
[2024-11-24 00:08:59,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 1387 transitions, 40456 flow
[2024-11-24 00:08:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-24 00:08:59,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2024-11-24 00:08:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions.
[2024-11-24 00:08:59,505 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111
[2024-11-24 00:08:59,505 INFO L175 Difference]: Start difference. First operand has 357 places, 1333 transitions, 37009 flow. Second operand 9 states and 115 transitions.
[2024-11-24 00:08:59,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 1387 transitions, 40456 flow
[2024-11-24 00:09:05,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 1387 transitions, 40210 flow, removed 13 selfloop flow, removed 4 redundant places.
[2024-11-24 00:09:05,871 INFO L231 Difference]: Finished difference. Result has 362 places, 1340 transitions, 37199 flow
[2024-11-24 00:09:05,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=36774, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37199, PETRI_PLACES=362, PETRI_TRANSITIONS=1340}
[2024-11-24 00:09:05,872 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 334 predicate places.
[2024-11-24 00:09:05,872 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 1340 transitions, 37199 flow
[2024-11-24 00:09:05,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:09:05,873 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:09:05,873 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:09:05,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2024-11-24 00:09:05,873 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:09:05,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:09:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash 503232530, now seen corresponding path program 17 times
[2024-11-24 00:09:05,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:09:05,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090535968]
[2024-11-24 00:09:05,874 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 00:09:05,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:09:05,885 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:09:05,886 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:09:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:09:06,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:09:06,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090535968]
[2024-11-24 00:09:06,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090535968] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:09:06,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918040937]
[2024-11-24 00:09:06,032 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 00:09:06,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:09:06,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:09:06,035 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:09:06,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2024-11-24 00:09:06,102 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 00:09:06,102 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:09:06,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:09:06,104 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:09:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:09:06,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 00:09:06,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918040937] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:09:06,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:09:06,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10
[2024-11-24 00:09:06,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802822813]
[2024-11-24 00:09:06,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:09:06,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:09:06,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:09:06,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:09:06,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2024-11-24 00:09:06,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:09:06,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 1340 transitions, 37199 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:09:06,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:09:06,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:09:06,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:09:11,292 INFO L124 PetriNetUnfolderBase]: 7321/11381 cut-off events.
[2024-11-24 00:09:11,293 INFO L125 PetriNetUnfolderBase]: For 434309/434309 co-relation queries the response was YES.
[2024-11-24 00:09:11,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125219 conditions, 11381 events. 7321/11381 cut-off events. For 434309/434309 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 73791 event pairs, 1986 based on Foata normal form. 2/11383 useless extension candidates. Maximal degree in co-relation 124783. Up to 10649 conditions per place.
[2024-11-24 00:09:11,635 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 1244 selfloop transitions, 115 changer transitions 5/1365 dead transitions.
[2024-11-24 00:09:11,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1365 transitions, 40189 flow
[2024-11-24 00:09:11,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 00:09:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 00:09:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions.
[2024-11-24 00:09:11,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857
[2024-11-24 00:09:11,636 INFO L175 Difference]: Start difference. First operand has 362 places, 1340 transitions, 37199 flow. Second operand 7 states and 85 transitions.
[2024-11-24 00:09:11,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1365 transitions, 40189 flow
[2024-11-24 00:09:18,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1365 transitions, 40028 flow, removed 2 selfloop flow, removed 2 redundant places.
[2024-11-24 00:09:18,556 INFO L231 Difference]: Finished difference. Result has 366 places, 1342 transitions, 37333 flow
[2024-11-24 00:09:18,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=37041, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37333, PETRI_PLACES=366, PETRI_TRANSITIONS=1342}
[2024-11-24 00:09:18,557 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 338 predicate places.
[2024-11-24 00:09:18,557 INFO L471 AbstractCegarLoop]: Abstraction has has 366 places, 1342 transitions, 37333 flow
[2024-11-24 00:09:18,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:09:18,557 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 00:09:18,558 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:09:18,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2024-11-24 00:09:18,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2024-11-24 00:09:18,758 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2024-11-24 00:09:18,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:09:18,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1770744250, now seen corresponding path program 18 times
[2024-11-24 00:09:18,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:09:18,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046064090]
[2024-11-24 00:09:18,759 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-24 00:09:18,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:09:18,768 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-11-24 00:09:18,768 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:09:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:09:18,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 00:09:18,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046064090]
[2024-11-24 00:09:18,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046064090] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 00:09:18,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044190864]
[2024-11-24 00:09:18,933 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-24 00:09:18,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:09:18,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:09:18,936 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:09:18,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec0d010-c70b-4779-94da-d3a5362b3126/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2024-11-24 00:09:19,017 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-11-24 00:09:19,018 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 00:09:19,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-24 00:09:19,019 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 00:09:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 00:09:19,070 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 00:09:19,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044190864] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 00:09:19,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 00:09:19,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9
[2024-11-24 00:09:19,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32359725]
[2024-11-24 00:09:19,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 00:09:19,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 00:09:19,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 00:09:19,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 00:09:19,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2024-11-24 00:09:19,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25
[2024-11-24 00:09:19,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1342 transitions, 37333 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 00:09:19,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 00:09:19,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25
[2024-11-24 00:09:19,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 00:09:25,100 INFO L124 PetriNetUnfolderBase]: 7319/11379 cut-off events.
[2024-11-24 00:09:25,101 INFO L125 PetriNetUnfolderBase]: For 432116/432116 co-relation queries the response was YES.
[2024-11-24 00:09:25,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125430 conditions, 11379 events. 7319/11379 cut-off events. For 432116/432116 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 73778 event pairs, 1999 based on Foata normal form. 2/11381 useless extension candidates. Maximal degree in co-relation 124989. Up to 10649 conditions per place.