./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB --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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-11-28 02:07:26,990 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-28 02:07:27,112 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-28 02:07:27,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-28 02:07:27,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-28 02:07:27,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-28 02:07:27,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-28 02:07:27,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-28 02:07:27,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-28 02:07:27,147 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-28 02:07:27,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-28 02:07:27,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-28 02:07:27,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-28 02:07:27,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-28 02:07:27,149 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-28 02:07:27,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-28 02:07:27,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-28 02:07:27,149 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-28 02:07:27,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-28 02:07:27,150 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-28 02:07:27,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-28 02:07:27,150 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-28 02:07:27,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-28 02:07:27,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-28 02:07:27,150 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-28 02:07:27,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-28 02:07:27,151 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-28 02:07:27,151 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-28 02:07:27,151 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-28 02:07:27,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-28 02:07:27,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 02:07:27,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-28 02:07:27,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:07:27,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-28 02:07:27,152 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-28 02:07:27,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 02:07:27,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-28 02:07:27,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:07:27,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-28 02:07:27,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-28 02:07:27,153 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-28 02:07:27,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-28 02:07:27,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-28 02:07:27,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-28 02:07:27,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-28 02:07:27,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-28 02:07:27,153 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-28 02:07:27,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-28 02:07:27,154 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_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB
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 -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688
[2024-11-28 02:07:27,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-28 02:07:27,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-28 02:07:27,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-28 02:07:27,543 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-28 02:07:27,543 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-28 02:07:27,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/stack_longer-2.i
[2024-11-28 02:07:30,770 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/data/f52e46a74/ee672a6244cb48c8a5feaca8651b46de/FLAG3b8f03b99
[2024-11-28 02:07:31,306 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-28 02:07:31,307 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/sv-benchmarks/c/pthread/stack_longer-2.i
[2024-11-28 02:07:31,338 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/data/f52e46a74/ee672a6244cb48c8a5feaca8651b46de/FLAG3b8f03b99
[2024-11-28 02:07:31,368 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/data/f52e46a74/ee672a6244cb48c8a5feaca8651b46de
[2024-11-28 02:07:31,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-28 02:07:31,375 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-28 02:07:31,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-28 02:07:31,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-28 02:07:31,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-28 02:07:31,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:31" (1/1) ...
[2024-11-28 02:07:31,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51bee056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:31, skipping insertion in model container
[2024-11-28 02:07:31,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:31" (1/1) ...
[2024-11-28 02:07:31,451 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-28 02:07:32,059 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_55e0e574-0009-4c07-8c7f-1427b82d972d/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542]
[2024-11-28 02:07:32,109 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-28 02:07:32,154 INFO L200 MainTranslator]: Completed pre-run
[2024-11-28 02:07:32,211 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_55e0e574-0009-4c07-8c7f-1427b82d972d/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542]
[2024-11-28 02:07:32,222 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-28 02:07:32,359 INFO L204 MainTranslator]: Completed translation
[2024-11-28 02:07:32,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32 WrapperNode
[2024-11-28 02:07:32,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-28 02:07:32,363 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-28 02:07:32,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-28 02:07:32,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-28 02:07:32,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,476 INFO L138 Inliner]: procedures = 277, calls = 430, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 543
[2024-11-28 02:07:32,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-28 02:07:32,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-28 02:07:32,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-28 02:07:32,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-28 02:07:32,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,502 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,540 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1].
[2024-11-28 02:07:32,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,578 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,593 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-28 02:07:32,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-28 02:07:32,615 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-28 02:07:32,615 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-28 02:07:32,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (1/1) ...
[2024-11-28 02:07:32,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:07:32,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:07:32,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-28 02:07:32,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-28 02:07:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure t1
[2024-11-28 02:07:32,714 INFO L138 BoogieDeclarations]: Found implementation of procedure t1
[2024-11-28 02:07:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure t2
[2024-11-28 02:07:32,714 INFO L138 BoogieDeclarations]: Found implementation of procedure t2
[2024-11-28 02:07:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock
[2024-11-28 02:07:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-28 02:07:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-28 02:07:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-11-28 02:07:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-28 02:07:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-28 02:07:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-11-28 02:07:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2024-11-28 02:07:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-28 02:07:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-28 02:07:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-28 02:07:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-28 02:07:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-28 02:07:32,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-28 02:07:32,719 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-28 02:07:32,914 INFO L234 CfgBuilder]: Building ICFG
[2024-11-28 02:07:32,915 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-28 02:07:34,149 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-28 02:07:34,150 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-28 02:07:40,784 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-28 02:07:40,784 INFO L312 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-28 02:07:40,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:40 BoogieIcfgContainer
[2024-11-28 02:07:40,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-28 02:07:40,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-28 02:07:40,789 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-28 02:07:40,799 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-28 02:07:40,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:31" (1/3) ...
[2024-11-28 02:07:40,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a89263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:40, skipping insertion in model container
[2024-11-28 02:07:40,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:32" (2/3) ...
[2024-11-28 02:07:40,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a89263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:40, skipping insertion in model container
[2024-11-28 02:07:40,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:40" (3/3) ...
[2024-11-28 02:07:40,804 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i
[2024-11-28 02:07:40,826 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-28 02:07:40,830 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longer-2.i that has 3 procedures, 30 locations, 1 initial locations, 2 loop locations, and 2 error locations.
[2024-11-28 02:07:40,830 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-28 02:07:40,946 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-11-28 02:07:41,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 82 flow
[2024-11-28 02:07:41,080 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events.
[2024-11-28 02:07:41,084 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-28 02:07:41,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 5/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place.
[2024-11-28 02:07:41,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 82 flow
[2024-11-28 02:07:41,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 69 flow
[2024-11-28 02:07:41,114 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-28 02:07:41,135 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;@2a92ac77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-28 02:07:41,135 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2024-11-28 02:07:41,174 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-28 02:07:41,174 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events.
[2024-11-28 02:07:41,174 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2024-11-28 02:07:41,175 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:07:41,175 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:07:41,176 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:07:41,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:07:41,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1553598884, now seen corresponding path program 1 times
[2024-11-28 02:07:41,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:07:41,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466896581]
[2024-11-28 02:07:41,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:41,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:07:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:42,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:07:42,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466896581]
[2024-11-28 02:07:42,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466896581] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:07:42,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 02:07:42,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-28 02:07:42,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173830853]
[2024-11-28 02:07:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:07:42,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 02:07:42,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:07:42,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 02:07:42,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-28 02:07:42,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34
[2024-11-28 02:07:42,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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)
[2024-11-28 02:07:42,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:07:42,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34
[2024-11-28 02:07:42,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-28 02:07:42,901 INFO L124 PetriNetUnfolderBase]: 307/576 cut-off events.
[2024-11-28 02:07:42,901 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES.
[2024-11-28 02:07:42,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 576 events. 307/576 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2546 event pairs, 53 based on Foata normal form. 43/582 useless extension candidates. Maximal degree in co-relation 1055. Up to 358 conditions per place.
[2024-11-28 02:07:42,910 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 41 selfloop transitions, 3 changer transitions 2/52 dead transitions.
[2024-11-28 02:07:42,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 214 flow
[2024-11-28 02:07:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-28 02:07:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-28 02:07:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions.
[2024-11-28 02:07:42,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6102941176470589
[2024-11-28 02:07:42,936 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 69 flow. Second operand 4 states and 83 transitions.
[2024-11-28 02:07:42,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 214 flow
[2024-11-28 02:07:42,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 52 transitions, 205 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-28 02:07:42,954 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 82 flow
[2024-11-28 02:07:42,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=30}
[2024-11-28 02:07:42,964 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places.
[2024-11-28 02:07:42,965 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 82 flow
[2024-11-28 02:07:42,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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)
[2024-11-28 02:07:42,965 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:07:42,965 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:07:42,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-28 02:07:42,966 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:07:42,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:07:42,967 INFO L85 PathProgramCache]: Analyzing trace with hash -233524225, now seen corresponding path program 1 times
[2024-11-28 02:07:42,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:07:42,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935597199]
[2024-11-28 02:07:42,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:42,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:07:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:43,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:07:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935597199]
[2024-11-28 02:07:43,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935597199] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:07:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812296965]
[2024-11-28 02:07:43,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:43,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:43,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:07:43,829 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:07:43,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-28 02:07:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:44,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 02:07:44,164 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:07:44,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:07:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:44,358 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-28 02:07:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:44,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812296965] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-28 02:07:44,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-28 02:07:44,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2024-11-28 02:07:44,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480308692]
[2024-11-28 02:07:44,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-28 02:07:44,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-28 02:07:44,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:07:44,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-28 02:07:44,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:07:44,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34
[2024-11-28 02:07:44,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 82 flow. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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)
[2024-11-28 02:07:44,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:07:44,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34
[2024-11-28 02:07:44,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-28 02:07:45,421 INFO L124 PetriNetUnfolderBase]: 1257/2340 cut-off events.
[2024-11-28 02:07:45,421 INFO L125 PetriNetUnfolderBase]: For 301/303 co-relation queries the response was YES.
[2024-11-28 02:07:45,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4928 conditions, 2340 events. 1257/2340 cut-off events. For 301/303 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12430 event pairs, 153 based on Foata normal form. 49/2288 useless extension candidates. Maximal degree in co-relation 4364. Up to 365 conditions per place.
[2024-11-28 02:07:45,449 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 163 selfloop transitions, 32 changer transitions 4/204 dead transitions.
[2024-11-28 02:07:45,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 204 transitions, 900 flow
[2024-11-28 02:07:45,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-11-28 02:07:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2024-11-28 02:07:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 313 transitions.
[2024-11-28 02:07:45,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6137254901960785
[2024-11-28 02:07:45,454 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 82 flow. Second operand 15 states and 313 transitions.
[2024-11-28 02:07:45,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 204 transitions, 900 flow
[2024-11-28 02:07:45,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 204 transitions, 896 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-28 02:07:45,465 INFO L231 Difference]: Finished difference. Result has 54 places, 66 transitions, 329 flow
[2024-11-28 02:07:45,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=329, PETRI_PLACES=54, PETRI_TRANSITIONS=66}
[2024-11-28 02:07:45,467 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places.
[2024-11-28 02:07:45,467 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 66 transitions, 329 flow
[2024-11-28 02:07:45,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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)
[2024-11-28 02:07:45,467 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:07:45,468 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:07:45,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-28 02:07:45,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:45,670 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:07:45,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:07:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash 780917001, now seen corresponding path program 1 times
[2024-11-28 02:07:45,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:07:45,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32538953]
[2024-11-28 02:07:45,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:45,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:07:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:45,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:45,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:07:45,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32538953]
[2024-11-28 02:07:45,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32538953] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:07:45,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 02:07:45,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-28 02:07:45,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830483695]
[2024-11-28 02:07:45,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:07:45,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 02:07:45,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:07:45,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 02:07:45,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-28 02:07:45,994 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34
[2024-11-28 02:07:45,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 66 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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)
[2024-11-28 02:07:45,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:07:45,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34
[2024-11-28 02:07:45,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-28 02:07:46,307 INFO L124 PetriNetUnfolderBase]: 669/1355 cut-off events.
[2024-11-28 02:07:46,308 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES.
[2024-11-28 02:07:46,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3066 conditions, 1355 events. 669/1355 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6858 event pairs, 231 based on Foata normal form. 66/1406 useless extension candidates. Maximal degree in co-relation 2918. Up to 634 conditions per place.
[2024-11-28 02:07:46,323 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 43 selfloop transitions, 4 changer transitions 0/59 dead transitions.
[2024-11-28 02:07:46,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 339 flow
[2024-11-28 02:07:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-28 02:07:46,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-28 02:07:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions.
[2024-11-28 02:07:46,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921
[2024-11-28 02:07:46,327 INFO L175 Difference]: Start difference. First operand has 54 places, 66 transitions, 329 flow. Second operand 3 states and 58 transitions.
[2024-11-28 02:07:46,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 339 flow
[2024-11-28 02:07:46,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 307 flow, removed 16 selfloop flow, removed 3 redundant places.
[2024-11-28 02:07:46,345 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 198 flow
[2024-11-28 02:07:46,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=50, PETRI_TRANSITIONS=49}
[2024-11-28 02:07:46,347 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places.
[2024-11-28 02:07:46,347 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 198 flow
[2024-11-28 02:07:46,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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)
[2024-11-28 02:07:46,348 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:07:46,348 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:07:46,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-28 02:07:46,348 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:07:46,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:07:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1022875712, now seen corresponding path program 1 times
[2024-11-28 02:07:46,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:07:46,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883514118]
[2024-11-28 02:07:46,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:46,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:07:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:48,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:07:48,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883514118]
[2024-11-28 02:07:48,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883514118] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:07:48,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 02:07:48,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-28 02:07:48,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447266475]
[2024-11-28 02:07:48,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:07:48,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-28 02:07:48,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:07:48,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-28 02:07:48,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-28 02:07:48,277 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34
[2024-11-28 02:07:48,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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)
[2024-11-28 02:07:48,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:07:48,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34
[2024-11-28 02:07:48,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-28 02:07:48,745 INFO L124 PetriNetUnfolderBase]: 840/1700 cut-off events.
[2024-11-28 02:07:48,745 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES.
[2024-11-28 02:07:48,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3884 conditions, 1700 events. 840/1700 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8907 event pairs, 260 based on Foata normal form. 0/1681 useless extension candidates. Maximal degree in co-relation 3504. Up to 971 conditions per place.
[2024-11-28 02:07:48,760 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 61 selfloop transitions, 7 changer transitions 4/84 dead transitions.
[2024-11-28 02:07:48,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 84 transitions, 451 flow
[2024-11-28 02:07:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-28 02:07:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-28 02:07:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions.
[2024-11-28 02:07:48,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5705882352941176
[2024-11-28 02:07:48,762 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 198 flow. Second operand 5 states and 97 transitions.
[2024-11-28 02:07:48,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 84 transitions, 451 flow
[2024-11-28 02:07:48,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 84 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-28 02:07:48,773 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 254 flow
[2024-11-28 02:07:48,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=56, PETRI_TRANSITIONS=54}
[2024-11-28 02:07:48,775 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places.
[2024-11-28 02:07:48,776 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 254 flow
[2024-11-28 02:07:48,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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)
[2024-11-28 02:07:48,776 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:07:48,777 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:07:48,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-28 02:07:48,777 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:07:48,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:07:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1714487563, now seen corresponding path program 1 times
[2024-11-28 02:07:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:07:48,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647275783]
[2024-11-28 02:07:48,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:48,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:07:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:50,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:50,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:07:50,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647275783]
[2024-11-28 02:07:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647275783] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:07:50,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438184132]
[2024-11-28 02:07:50,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:50,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:50,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:07:50,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:07:50,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-28 02:07:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:50,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-11-28 02:07:50,550 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:07:50,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:07:50,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1
[2024-11-28 02:07:50,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32
[2024-11-28 02:07:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:50,956 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-28 02:07:51,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1
[2024-11-28 02:07:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:51,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438184132] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-28 02:07:51,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-28 02:07:51,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13
[2024-11-28 02:07:51,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993844236]
[2024-11-28 02:07:51,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-28 02:07:51,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-28 02:07:51,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:07:51,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-28 02:07:51,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182
[2024-11-28 02:07:51,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34
[2024-11-28 02:07:51,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 254 flow. Second operand has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 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)
[2024-11-28 02:07:51,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:07:51,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34
[2024-11-28 02:07:51,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-28 02:07:53,301 INFO L124 PetriNetUnfolderBase]: 1747/3464 cut-off events.
[2024-11-28 02:07:53,302 INFO L125 PetriNetUnfolderBase]: For 1581/1581 co-relation queries the response was YES.
[2024-11-28 02:07:53,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7901 conditions, 3464 events. 1747/3464 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 18914 event pairs, 341 based on Foata normal form. 14/3413 useless extension candidates. Maximal degree in co-relation 6810. Up to 566 conditions per place.
[2024-11-28 02:07:53,333 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 201 selfloop transitions, 52 changer transitions 18/276 dead transitions.
[2024-11-28 02:07:53,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 276 transitions, 1488 flow
[2024-11-28 02:07:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-11-28 02:07:53,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2024-11-28 02:07:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 413 transitions.
[2024-11-28 02:07:53,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5521390374331551
[2024-11-28 02:07:53,337 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 254 flow. Second operand 22 states and 413 transitions.
[2024-11-28 02:07:53,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 276 transitions, 1488 flow
[2024-11-28 02:07:53,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 276 transitions, 1480 flow, removed 3 selfloop flow, removed 1 redundant places.
[2024-11-28 02:07:53,360 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 542 flow
[2024-11-28 02:07:53,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=542, PETRI_PLACES=81, PETRI_TRANSITIONS=89}
[2024-11-28 02:07:53,361 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places.
[2024-11-28 02:07:53,361 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 542 flow
[2024-11-28 02:07:53,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 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)
[2024-11-28 02:07:53,361 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:07:53,361 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:07:53,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-28 02:07:53,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:53,562 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:07:53,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:07:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash 943848070, now seen corresponding path program 1 times
[2024-11-28 02:07:53,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:07:53,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905719991]
[2024-11-28 02:07:53,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:53,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:07:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:54,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:07:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905719991]
[2024-11-28 02:07:54,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905719991] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:07:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500006905]
[2024-11-28 02:07:54,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:54,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:54,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:07:54,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:07:54,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-28 02:07:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:54,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-28 02:07:54,499 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:07:54,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:07:54,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:07:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:54,898 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-28 02:07:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-28 02:07:54,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500006905] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:07:54,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-28 02:07:54,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12
[2024-11-28 02:07:54,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48116184]
[2024-11-28 02:07:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:07:54,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-28 02:07:54,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:07:54,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-28 02:07:54,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132
[2024-11-28 02:07:54,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34
[2024-11-28 02:07:54,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 542 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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)
[2024-11-28 02:07:54,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:07:54,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34
[2024-11-28 02:07:54,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-28 02:07:55,954 INFO L124 PetriNetUnfolderBase]: 2062/4114 cut-off events.
[2024-11-28 02:07:55,954 INFO L125 PetriNetUnfolderBase]: For 3655/3655 co-relation queries the response was YES.
[2024-11-28 02:07:55,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9905 conditions, 4114 events. 2062/4114 cut-off events. For 3655/3655 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 23875 event pairs, 425 based on Foata normal form. 24/4108 useless extension candidates. Maximal degree in co-relation 9267. Up to 1663 conditions per place.
[2024-11-28 02:07:56,000 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 81 selfloop transitions, 50 changer transitions 2/138 dead transitions.
[2024-11-28 02:07:56,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 993 flow
[2024-11-28 02:07:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-28 02:07:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-28 02:07:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions.
[2024-11-28 02:07:56,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373
[2024-11-28 02:07:56,002 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 542 flow. Second operand 6 states and 112 transitions.
[2024-11-28 02:07:56,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 993 flow
[2024-11-28 02:07:56,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 138 transitions, 969 flow, removed 12 selfloop flow, removed 0 redundant places.
[2024-11-28 02:07:56,034 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 751 flow
[2024-11-28 02:07:56,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=751, PETRI_PLACES=88, PETRI_TRANSITIONS=101}
[2024-11-28 02:07:56,035 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places.
[2024-11-28 02:07:56,035 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 751 flow
[2024-11-28 02:07:56,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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)
[2024-11-28 02:07:56,035 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:07:56,035 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:07:56,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-28 02:07:56,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:56,240 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:07:56,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:07:56,241 INFO L85 PathProgramCache]: Analyzing trace with hash -654218080, now seen corresponding path program 1 times
[2024-11-28 02:07:56,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:07:56,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954218136]
[2024-11-28 02:07:56,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:56,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:07:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:58,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:07:58,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954218136]
[2024-11-28 02:07:58,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954218136] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:07:58,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136121011]
[2024-11-28 02:07:58,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:58,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:58,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:07:58,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:07:58,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-28 02:07:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:58,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-28 02:07:58,353 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:07:58,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-28 02:07:58,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 19
[2024-11-28 02:07:58,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32
[2024-11-28 02:07:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:58,915 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-28 02:07:59,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-28 02:07:59,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 14
[2024-11-28 02:07:59,874 INFO L349 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size
[2024-11-28 02:07:59,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 65
[2024-11-28 02:07:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:07:59,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136121011] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-28 02:07:59,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-28 02:07:59,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16
[2024-11-28 02:07:59,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726680198]
[2024-11-28 02:07:59,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-28 02:07:59,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-11-28 02:07:59,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:07:59,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-11-28 02:07:59,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272
[2024-11-28 02:07:59,998 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34
[2024-11-28 02:07:59,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 751 flow. Second operand has 17 states, 17 states have (on average 11.058823529411764) internal successors, (188), 17 states have internal predecessors, (188), 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)
[2024-11-28 02:07:59,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:07:59,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34
[2024-11-28 02:07:59,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-28 02:08:03,420 INFO L124 PetriNetUnfolderBase]: 4046/8044 cut-off events.
[2024-11-28 02:08:03,420 INFO L125 PetriNetUnfolderBase]: For 11279/11279 co-relation queries the response was YES.
[2024-11-28 02:08:03,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20343 conditions, 8044 events. 4046/8044 cut-off events. For 11279/11279 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 49044 event pairs, 950 based on Foata normal form. 56/8070 useless extension candidates. Maximal degree in co-relation 19195. Up to 1343 conditions per place.
[2024-11-28 02:08:03,510 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 226 selfloop transitions, 123 changer transitions 36/390 dead transitions.
[2024-11-28 02:08:03,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 390 transitions, 2865 flow
[2024-11-28 02:08:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-11-28 02:08:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2024-11-28 02:08:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 450 transitions.
[2024-11-28 02:08:03,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824
[2024-11-28 02:08:03,513 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 751 flow. Second operand 25 states and 450 transitions.
[2024-11-28 02:08:03,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 390 transitions, 2865 flow
[2024-11-28 02:08:03,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 390 transitions, 2777 flow, removed 32 selfloop flow, removed 1 redundant places.
[2024-11-28 02:08:03,583 INFO L231 Difference]: Finished difference. Result has 122 places, 169 transitions, 1719 flow
[2024-11-28 02:08:03,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1719, PETRI_PLACES=122, PETRI_TRANSITIONS=169}
[2024-11-28 02:08:03,584 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places.
[2024-11-28 02:08:03,585 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 169 transitions, 1719 flow
[2024-11-28 02:08:03,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.058823529411764) internal successors, (188), 17 states have internal predecessors, (188), 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)
[2024-11-28 02:08:03,587 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:08:03,587 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1]
[2024-11-28 02:08:03,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-28 02:08:03,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:03,788 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:08:03,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:08:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash -636300912, now seen corresponding path program 2 times
[2024-11-28 02:08:03,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:08:03,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693030310]
[2024-11-28 02:08:03,789 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-28 02:08:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:08:03,868 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-28 02:08:03,872 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-28 02:08:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:08:04,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:08:04,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693030310]
[2024-11-28 02:08:04,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693030310] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:08:04,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253643132]
[2024-11-28 02:08:04,460 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-28 02:08:04,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:04,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:08:04,462 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:08:04,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-28 02:08:04,747 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-28 02:08:04,748 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-28 02:08:04,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-28 02:08:04,758 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:08:04,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:08:04,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:08:04,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:08:05,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:08:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:08:05,106 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-28 02:08:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:08:05,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253643132] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-28 02:08:05,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-28 02:08:05,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22
[2024-11-28 02:08:05,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196095828]
[2024-11-28 02:08:05,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-28 02:08:05,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-28 02:08:05,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:08:05,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-28 02:08:05,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=329, Unknown=0, NotChecked=0, Total=506
[2024-11-28 02:08:05,289 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34
[2024-11-28 02:08:05,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 169 transitions, 1719 flow. Second operand has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 23 states have internal predecessors, (237), 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)
[2024-11-28 02:08:05,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:08:05,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34
[2024-11-28 02:08:05,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-28 02:08:10,446 INFO L124 PetriNetUnfolderBase]: 10636/20779 cut-off events.
[2024-11-28 02:08:10,446 INFO L125 PetriNetUnfolderBase]: For 53576/53576 co-relation queries the response was YES.
[2024-11-28 02:08:10,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58360 conditions, 20779 events. 10636/20779 cut-off events. For 53576/53576 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 150649 event pairs, 1949 based on Foata normal form. 326/21103 useless extension candidates. Maximal degree in co-relation 56400. Up to 3450 conditions per place.
[2024-11-28 02:08:10,597 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 565 selfloop transitions, 369 changer transitions 20/959 dead transitions.
[2024-11-28 02:08:10,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 959 transitions, 8466 flow
[2024-11-28 02:08:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2024-11-28 02:08:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2024-11-28 02:08:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 1074 transitions.
[2024-11-28 02:08:10,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5264705882352941
[2024-11-28 02:08:10,603 INFO L175 Difference]: Start difference. First operand has 122 places, 169 transitions, 1719 flow. Second operand 60 states and 1074 transitions.
[2024-11-28 02:08:10,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 959 transitions, 8466 flow
[2024-11-28 02:08:10,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 959 transitions, 8312 flow, removed 75 selfloop flow, removed 1 redundant places.
[2024-11-28 02:08:10,989 INFO L231 Difference]: Finished difference. Result has 196 places, 444 transitions, 5607 flow
[2024-11-28 02:08:10,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=5607, PETRI_PLACES=196, PETRI_TRANSITIONS=444}
[2024-11-28 02:08:10,991 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places.
[2024-11-28 02:08:10,992 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 444 transitions, 5607 flow
[2024-11-28 02:08:10,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 23 states have internal predecessors, (237), 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)
[2024-11-28 02:08:10,993 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:08:10,993 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:08:11,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-28 02:08:11,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:11,194 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:08:11,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:08:11,194 INFO L85 PathProgramCache]: Analyzing trace with hash 520803504, now seen corresponding path program 2 times
[2024-11-28 02:08:11,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:08:11,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291178871]
[2024-11-28 02:08:11,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-28 02:08:11,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:08:11,291 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-28 02:08:11,291 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-28 02:08:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:08:13,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:08:13,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291178871]
[2024-11-28 02:08:13,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291178871] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:08:13,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370944788]
[2024-11-28 02:08:13,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-28 02:08:13,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:13,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:08:13,278 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:08:13,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-28 02:08:13,645 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-28 02:08:13,645 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-28 02:08:13,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-11-28 02:08:13,661 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:08:13,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-28 02:08:13,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14
[2024-11-28 02:08:13,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14
[2024-11-28 02:08:14,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32
[2024-11-28 02:08:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:08:14,316 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-28 02:08:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:08:15,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370944788] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-28 02:08:15,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-28 02:08:15,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27
[2024-11-28 02:08:15,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236600038]
[2024-11-28 02:08:15,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-28 02:08:15,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2024-11-28 02:08:15,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:08:15,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2024-11-28 02:08:15,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702
[2024-11-28 02:08:15,235 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34
[2024-11-28 02:08:15,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 444 transitions, 5607 flow. Second operand has 27 states, 27 states have (on average 10.666666666666666) internal successors, (288), 27 states have internal predecessors, (288), 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)
[2024-11-28 02:08:15,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:08:15,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34
[2024-11-28 02:08:15,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-28 02:08:24,887 INFO L124 PetriNetUnfolderBase]: 20937/40607 cut-off events.
[2024-11-28 02:08:24,887 INFO L125 PetriNetUnfolderBase]: For 180855/180855 co-relation queries the response was YES.
[2024-11-28 02:08:25,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124388 conditions, 40607 events. 20937/40607 cut-off events. For 180855/180855 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 312525 event pairs, 3498 based on Foata normal form. 441/41046 useless extension candidates. Maximal degree in co-relation 122219. Up to 6855 conditions per place.
[2024-11-28 02:08:25,261 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 427 selfloop transitions, 702 changer transitions 26/1160 dead transitions.
[2024-11-28 02:08:25,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1160 transitions, 14859 flow
[2024-11-28 02:08:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2024-11-28 02:08:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2024-11-28 02:08:25,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 585 transitions.
[2024-11-28 02:08:25,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5060553633217993
[2024-11-28 02:08:25,268 INFO L175 Difference]: Start difference. First operand has 196 places, 444 transitions, 5607 flow. Second operand 34 states and 585 transitions.
[2024-11-28 02:08:25,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 1160 transitions, 14859 flow
[2024-11-28 02:08:26,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 1160 transitions, 13391 flow, removed 734 selfloop flow, removed 0 redundant places.
[2024-11-28 02:08:26,851 INFO L231 Difference]: Finished difference. Result has 250 places, 838 transitions, 11810 flow
[2024-11-28 02:08:26,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5031, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=11810, PETRI_PLACES=250, PETRI_TRANSITIONS=838}
[2024-11-28 02:08:26,852 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 218 predicate places.
[2024-11-28 02:08:26,852 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 838 transitions, 11810 flow
[2024-11-28 02:08:26,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.666666666666666) internal successors, (288), 27 states have internal predecessors, (288), 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)
[2024-11-28 02:08:26,852 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:08:26,853 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:08:26,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-28 02:08:27,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:27,053 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:08:27,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:08:27,054 INFO L85 PathProgramCache]: Analyzing trace with hash 910679246, now seen corresponding path program 1 times
[2024-11-28 02:08:27,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:08:27,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464061992]
[2024-11-28 02:08:27,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:27,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:08:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 7 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-28 02:08:28,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:08:28,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464061992]
[2024-11-28 02:08:28,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464061992] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:08:28,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171194227]
[2024-11-28 02:08:28,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:28,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:28,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:08:28,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:08:28,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-28 02:08:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:28,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-28 02:08:28,449 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:08:28,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:08:28,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:08:28,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:08:28,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:08:28,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:08:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:08:29,099 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-28 02:08:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 34 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-28 02:08:29,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171194227] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-28 02:08:29,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-28 02:08:29,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 22
[2024-11-28 02:08:29,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418700620]
[2024-11-28 02:08:29,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-28 02:08:29,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-11-28 02:08:29,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:08:29,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-11-28 02:08:29,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462
[2024-11-28 02:08:29,202 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34
[2024-11-28 02:08:29,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 838 transitions, 11810 flow. Second operand has 22 states, 22 states have (on average 12.318181818181818) internal successors, (271), 22 states have internal predecessors, (271), 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)
[2024-11-28 02:08:29,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:08:29,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34
[2024-11-28 02:08:29,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-28 02:08:48,085 INFO L124 PetriNetUnfolderBase]: 36093/70184 cut-off events.
[2024-11-28 02:08:48,085 INFO L125 PetriNetUnfolderBase]: For 481912/481912 co-relation queries the response was YES.
[2024-11-28 02:08:48,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227066 conditions, 70184 events. 36093/70184 cut-off events. For 481912/481912 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 582321 event pairs, 4376 based on Foata normal form. 501/70671 useless extension candidates. Maximal degree in co-relation 224926. Up to 11772 conditions per place.
[2024-11-28 02:08:48,880 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 704 selfloop transitions, 1363 changer transitions 30/2102 dead transitions.
[2024-11-28 02:08:48,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 2102 transitions, 27822 flow
[2024-11-28 02:08:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2024-11-28 02:08:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2024-11-28 02:08:48,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 1142 transitions.
[2024-11-28 02:08:48,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5167420814479639
[2024-11-28 02:08:48,884 INFO L175 Difference]: Start difference. First operand has 250 places, 838 transitions, 11810 flow. Second operand 65 states and 1142 transitions.
[2024-11-28 02:08:48,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 2102 transitions, 27822 flow
[2024-11-28 02:08:58,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 2102 transitions, 27464 flow, removed 172 selfloop flow, removed 2 redundant places.
[2024-11-28 02:08:58,358 INFO L231 Difference]: Finished difference. Result has 324 places, 1513 transitions, 24044 flow
[2024-11-28 02:08:58,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=11635, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=728, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=24044, PETRI_PLACES=324, PETRI_TRANSITIONS=1513}
[2024-11-28 02:08:58,359 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places.
[2024-11-28 02:08:58,359 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 1513 transitions, 24044 flow
[2024-11-28 02:08:58,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.318181818181818) internal successors, (271), 22 states have internal predecessors, (271), 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)
[2024-11-28 02:08:58,360 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:08:58,360 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:08:58,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-28 02:08:58,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-11-28 02:08:58,560 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:08:58,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:08:58,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1277630704, now seen corresponding path program 3 times
[2024-11-28 02:08:58,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:08:58,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372401807]
[2024-11-28 02:08:58,561 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-28 02:08:58,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:08:58,903 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2024-11-28 02:08:58,903 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-28 02:09:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 33 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:09:02,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:09:02,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372401807]
[2024-11-28 02:09:02,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372401807] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:09:02,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610062651]
[2024-11-28 02:09:02,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-28 02:09:02,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:09:02,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:09:02,625 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:09:02,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-28 02:09:03,355 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2024-11-28 02:09:03,356 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-28 02:09:03,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 35 conjuncts are in the unsatisfiable core
[2024-11-28 02:09:03,370 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:09:03,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-28 02:09:03,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14
[2024-11-28 02:09:03,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14
[2024-11-28 02:09:03,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14
[2024-11-28 02:09:04,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-28 02:09:04,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 38
[2024-11-28 02:09:04,620 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:09:04,620 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-28 02:09:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 02:09:05,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610062651] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-28 02:09:05,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-28 02:09:05,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31
[2024-11-28 02:09:05,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042493665]
[2024-11-28 02:09:05,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-28 02:09:05,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2024-11-28 02:09:05,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:09:05,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2024-11-28 02:09:05,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930
[2024-11-28 02:09:05,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34
[2024-11-28 02:09:05,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 1513 transitions, 24044 flow. Second operand has 31 states, 31 states have (on average 10.774193548387096) internal successors, (334), 31 states have internal predecessors, (334), 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)
[2024-11-28 02:09:05,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:09:05,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34
[2024-11-28 02:09:05,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-28 02:09:50,321 INFO L124 PetriNetUnfolderBase]: 64220/124145 cut-off events.
[2024-11-28 02:09:50,321 INFO L125 PetriNetUnfolderBase]: For 913611/913611 co-relation queries the response was YES.
[2024-11-28 02:09:51,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420333 conditions, 124145 events. 64220/124145 cut-off events. For 913611/913611 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 1121117 event pairs, 10530 based on Foata normal form. 1029/125172 useless extension candidates. Maximal degree in co-relation 418041. Up to 20982 conditions per place.
[2024-11-28 02:09:52,286 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 869 selfloop transitions, 2365 changer transitions 42/3281 dead transitions.
[2024-11-28 02:09:52,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 3281 transitions, 53515 flow
[2024-11-28 02:09:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2024-11-28 02:09:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2024-11-28 02:09:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 940 transitions.
[2024-11-28 02:09:52,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5026737967914439
[2024-11-28 02:09:52,289 INFO L175 Difference]: Start difference. First operand has 324 places, 1513 transitions, 24044 flow. Second operand 55 states and 940 transitions.
[2024-11-28 02:09:52,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 3281 transitions, 53515 flow
[2024-11-28 02:10:26,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 3281 transitions, 52779 flow, removed 361 selfloop flow, removed 2 redundant places.
[2024-11-28 02:10:26,848 INFO L231 Difference]: Finished difference. Result has 404 places, 2665 transitions, 49348 flow
[2024-11-28 02:10:26,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=23661, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=49348, PETRI_PLACES=404, PETRI_TRANSITIONS=2665}
[2024-11-28 02:10:26,850 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places.
[2024-11-28 02:10:26,850 INFO L471 AbstractCegarLoop]: Abstraction has has 404 places, 2665 transitions, 49348 flow
[2024-11-28 02:10:26,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.774193548387096) internal successors, (334), 31 states have internal predecessors, (334), 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)
[2024-11-28 02:10:26,850 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-28 02:10:26,850 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 02:10:26,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2024-11-28 02:10:27,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2024-11-28 02:10:27,054 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-28 02:10:27,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:10:27,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1205529298, now seen corresponding path program 2 times
[2024-11-28 02:10:27,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:10:27,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342292045]
[2024-11-28 02:10:27,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-28 02:10:27,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:10:27,117 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-28 02:10:27,117 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-28 02:10:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 94 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-28 02:10:28,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:10:28,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342292045]
[2024-11-28 02:10:28,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342292045] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:10:28,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979660044]
[2024-11-28 02:10:28,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-28 02:10:28,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:10:28,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:10:28,078 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:10:28,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e0e574-0009-4c07-8c7f-1427b82d972d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-28 02:10:28,373 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-28 02:10:28,373 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-28 02:10:28,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-28 02:10:28,382 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:10:28,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-28 02:10:28,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23
[2024-11-28 02:10:28,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5
[2024-11-28 02:10:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked.
[2024-11-28 02:10:28,963 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-28 02:10:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2024-11-28 02:10:29,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979660044] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-28 02:10:29,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-28 02:10:29,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23
[2024-11-28 02:10:29,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375658866]
[2024-11-28 02:10:29,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-28 02:10:29,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-28 02:10:29,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:10:29,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-28 02:10:29,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506
[2024-11-28 02:10:29,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34
[2024-11-28 02:10:29,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 2665 transitions, 49348 flow. Second operand has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 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)
[2024-11-28 02:10:29,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-28 02:10:29,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34
[2024-11-28 02:10:29,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand