./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 01:14:11,902 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-24 01:14:11,996 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2024-11-24 01:14:12,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 01:14:12,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 01:14:12,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 01:14:12,036 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 01:14:12,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 01:14:12,037 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 01:14:12,037 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-24 01:14:12,037 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 01:14:12,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 01:14:12,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 01:14:12,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-24 01:14:12,037 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-24 01:14:12,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 01:14:12,038 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-24 01:14:12,038 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-24 01:14:12,038 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-24 01:14:12,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-24 01:14:12,038 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-11-24 01:14:12,038 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-11-24 01:14:12,038 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-11-24 01:14:12,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 01:14:12,038 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-24 01:14:12,039 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-24 01:14:12,039 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-24 01:14:12,039 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 01:14:12,039 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-24 01:14:12,039 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 01:14:12,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 01:14:12,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 01:14:12,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 01:14:12,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:14:12,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 01:14:12,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 01:14:12,040 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 01:14:12,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 01:14:12,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:14:12,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 01:14:12,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 01:14:12,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-24 01:14:12,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-24 01:14:12,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 01:14:12,040 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 01:14:12,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 01:14:12,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 01:14:12,041 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_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
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 -> f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193
[2024-11-24 01:14:12,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 01:14:12,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 01:14:12,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 01:14:12,350 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-24 01:14:12,351 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-24 01:14:12,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c
[2024-11-24 01:14:15,463 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/data/baad5dac0/8663d95d17e34c64bab35b839f7ae0bc/FLAGfa3f36bcb
[2024-11-24 01:14:15,742 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-24 01:14:15,743 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c
[2024-11-24 01:14:15,750 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/data/baad5dac0/8663d95d17e34c64bab35b839f7ae0bc/FLAGfa3f36bcb
[2024-11-24 01:14:16,024 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/data/baad5dac0/8663d95d17e34c64bab35b839f7ae0bc
[2024-11-24 01:14:16,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 01:14:16,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 01:14:16,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 01:14:16,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 01:14:16,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 01:14:16,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174aeba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16, skipping insertion in model container
[2024-11-24 01:14:16,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,054 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-24 01:14:16,249 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model
[2024-11-24 01:14:16,253 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 01:14:16,263 INFO L200 MainTranslator]: Completed pre-run
[2024-11-24 01:14:16,290 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 01:14:16,303 INFO L204 MainTranslator]: Completed translation
[2024-11-24 01:14:16,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16 WrapperNode
[2024-11-24 01:14:16,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 01:14:16,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 01:14:16,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 01:14:16,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 01:14:16,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,345 INFO L138 Inliner]: procedures = 25, calls = 32, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 263
[2024-11-24 01:14:16,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 01:14:16,346 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 01:14:16,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 01:14:16,346 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 01:14:16,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,389 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3].
[2024-11-24 01:14:16,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,407 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 01:14:16,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 01:14:16,431 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 01:14:16,432 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-24 01:14:16,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (1/1) ...
[2024-11-24 01:14:16,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:14:16,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:16,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 01:14:16,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 01:14:16,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-24 01:14:16,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2024-11-24 01:14:16,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2024-11-24 01:14:16,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2024-11-24 01:14:16,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2024-11-24 01:14:16,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2024-11-24 01:14:16,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2024-11-24 01:14:16,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-24 01:14:16,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-24 01:14:16,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-24 01:14:16,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-24 01:14:16,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-24 01:14:16,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 01:14:16,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 01:14:16,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-24 01:14:16,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-24 01:14:16,507 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-24 01:14:16,641 INFO L234 CfgBuilder]: Building ICFG
[2024-11-24 01:14:16,642 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 01:14:17,212 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-24 01:14:17,213 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-24 01:14:17,717 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 01:14:17,720 INFO L312 CfgBuilder]: Removed 6 assume(true) statements.
[2024-11-24 01:14:17,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:14:17 BoogieIcfgContainer
[2024-11-24 01:14:17,720 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 01:14:17,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 01:14:17,723 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 01:14:17,728 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-24 01:14:17,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:14:16" (1/3) ...
[2024-11-24 01:14:17,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74751871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:14:17, skipping insertion in model container
[2024-11-24 01:14:17,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:16" (2/3) ...
[2024-11-24 01:14:17,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74751871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:14:17, skipping insertion in model container
[2024-11-24 01:14:17,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:14:17" (3/3) ...
[2024-11-24 01:14:17,732 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c
[2024-11-24 01:14:17,748 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 01:14:17,750 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-chromosome-trans.wvr.c that has 4 procedures, 55 locations, 1 initial locations, 6 loop locations, and 20 error locations.
[2024-11-24 01:14:17,750 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-24 01:14:17,884 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2024-11-24 01:14:17,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 60 transitions, 141 flow
[2024-11-24 01:14:17,975 INFO L124 PetriNetUnfolderBase]: 6/57 cut-off events.
[2024-11-24 01:14:17,979 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2024-11-24 01:14:17,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 6/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 152 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place.
[2024-11-24 01:14:17,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 60 transitions, 141 flow
[2024-11-24 01:14:17,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 56 transitions, 130 flow
[2024-11-24 01:14:18,000 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 01:14:18,015 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=None, 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;@db1836b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 01:14:18,017 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations.
[2024-11-24 01:14:18,021 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-24 01:14:18,022 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events.
[2024-11-24 01:14:18,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-24 01:14:18,022 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:18,023 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2024-11-24 01:14:18,023 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:18,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash 861723, now seen corresponding path program 1 times
[2024-11-24 01:14:18,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:18,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161490274]
[2024-11-24 01:14:18,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:18,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:14:18,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:18,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161490274]
[2024-11-24 01:14:18,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161490274] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:14:18,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:14:18,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-11-24 01:14:18,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140149457]
[2024-11-24 01:14:18,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:14:18,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-24 01:14:18,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:18,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-24 01:14:18,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 01:14:18,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60
[2024-11-24 01:14:18,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:18,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:18,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60
[2024-11-24 01:14:18,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:18,685 INFO L124 PetriNetUnfolderBase]: 202/443 cut-off events.
[2024-11-24 01:14:18,686 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES.
[2024-11-24 01:14:18,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 443 events. 202/443 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2077 event pairs, 124 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 672. Up to 293 conditions per place.
[2024-11-24 01:14:18,695 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 27 selfloop transitions, 2 changer transitions 0/51 dead transitions.
[2024-11-24 01:14:18,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 178 flow
[2024-11-24 01:14:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 01:14:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-24 01:14:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions.
[2024-11-24 01:14:18,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667
[2024-11-24 01:14:18,714 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 130 flow. Second operand 3 states and 111 transitions.
[2024-11-24 01:14:18,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 178 flow
[2024-11-24 01:14:18,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 166 flow, removed 0 selfloop flow, removed 6 redundant places.
[2024-11-24 01:14:18,747 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 112 flow
[2024-11-24 01:14:18,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=51, PETRI_TRANSITIONS=51}
[2024-11-24 01:14:18,756 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -9 predicate places.
[2024-11-24 01:14:18,757 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 112 flow
[2024-11-24 01:14:18,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:18,758 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:18,758 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2024-11-24 01:14:18,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-24 01:14:18,759 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:18,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:18,760 INFO L85 PathProgramCache]: Analyzing trace with hash 861724, now seen corresponding path program 1 times
[2024-11-24 01:14:18,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:18,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632285791]
[2024-11-24 01:14:18,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:18,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:14:19,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:19,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632285791]
[2024-11-24 01:14:19,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632285791] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:14:19,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:14:19,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 01:14:19,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718431439]
[2024-11-24 01:14:19,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:14:19,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 01:14:19,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:19,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 01:14:19,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-24 01:14:19,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60
[2024-11-24 01:14:19,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:19,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:19,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60
[2024-11-24 01:14:19,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:19,358 INFO L124 PetriNetUnfolderBase]: 202/449 cut-off events.
[2024-11-24 01:14:19,359 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES.
[2024-11-24 01:14:19,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 449 events. 202/449 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2081 event pairs, 124 based on Foata normal form. 1/364 useless extension candidates. Maximal degree in co-relation 734. Up to 305 conditions per place.
[2024-11-24 01:14:19,365 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 32 selfloop transitions, 6 changer transitions 0/57 dead transitions.
[2024-11-24 01:14:19,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 200 flow
[2024-11-24 01:14:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 01:14:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-24 01:14:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions.
[2024-11-24 01:14:19,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6777777777777778
[2024-11-24 01:14:19,370 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 112 flow. Second operand 3 states and 122 transitions.
[2024-11-24 01:14:19,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 200 flow
[2024-11-24 01:14:19,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-24 01:14:19,375 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 146 flow
[2024-11-24 01:14:19,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=52, PETRI_TRANSITIONS=54}
[2024-11-24 01:14:19,376 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -8 predicate places.
[2024-11-24 01:14:19,377 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 146 flow
[2024-11-24 01:14:19,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:19,378 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:19,378 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1]
[2024-11-24 01:14:19,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-24 01:14:19,378 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:19,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:19,379 INFO L85 PathProgramCache]: Analyzing trace with hash 828145301, now seen corresponding path program 1 times
[2024-11-24 01:14:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:19,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542280760]
[2024-11-24 01:14:19,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:14:19,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:19,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542280760]
[2024-11-24 01:14:19,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542280760] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:19,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963582694]
[2024-11-24 01:14:19,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:19,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:19,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:19,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:14:19,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-24 01:14:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:19,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-24 01:14:19,853 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:14:19,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:14:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:14:20,001 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:14:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:14:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963582694] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:14:20,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:14:20,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7
[2024-11-24 01:14:20,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211104633]
[2024-11-24 01:14:20,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:14:20,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-24 01:14:20,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:20,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-24 01:14:20,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2024-11-24 01:14:20,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60
[2024-11-24 01:14:20,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 146 flow. Second operand has 9 states, 9 states have (on average 27.666666666666668) internal successors, (249), 9 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:20,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:20,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60
[2024-11-24 01:14:20,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:20,847 INFO L124 PetriNetUnfolderBase]: 208/473 cut-off events.
[2024-11-24 01:14:20,847 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES.
[2024-11-24 01:14:20,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 473 events. 208/473 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2130 event pairs, 124 based on Foata normal form. 3/392 useless extension candidates. Maximal degree in co-relation 766. Up to 307 conditions per place.
[2024-11-24 01:14:20,855 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 41 selfloop transitions, 21 changer transitions 0/81 dead transitions.
[2024-11-24 01:14:20,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 81 transitions, 358 flow
[2024-11-24 01:14:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 01:14:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 01:14:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 230 transitions.
[2024-11-24 01:14:20,858 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888
[2024-11-24 01:14:20,858 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 146 flow. Second operand 6 states and 230 transitions.
[2024-11-24 01:14:20,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 81 transitions, 358 flow
[2024-11-24 01:14:20,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 81 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-24 01:14:20,863 INFO L231 Difference]: Finished difference. Result has 59 places, 69 transitions, 292 flow
[2024-11-24 01:14:20,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=59, PETRI_TRANSITIONS=69}
[2024-11-24 01:14:20,865 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places.
[2024-11-24 01:14:20,865 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 69 transitions, 292 flow
[2024-11-24 01:14:20,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.666666666666668) internal successors, (249), 9 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:20,865 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:20,865 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1]
[2024-11-24 01:14:20,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-24 01:14:21,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:21,066 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:21,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:21,067 INFO L85 PathProgramCache]: Analyzing trace with hash -66884992, now seen corresponding path program 2 times
[2024-11-24 01:14:21,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:21,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303391476]
[2024-11-24 01:14:21,067 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:14:21,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:21,092 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 01:14:21,092 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:14:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:14:21,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:21,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303391476]
[2024-11-24 01:14:21,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303391476] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:21,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294899817]
[2024-11-24 01:14:21,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:14:21,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:21,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:21,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:14:21,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-24 01:14:21,651 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 01:14:21,652 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:14:21,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-24 01:14:21,654 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:14:21,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:14:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:14:21,858 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:14:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:14:22,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294899817] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:14:22,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:14:22,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16
[2024-11-24 01:14:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579400296]
[2024-11-24 01:14:22,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:14:22,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-24 01:14:22,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:22,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-24 01:14:22,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306
[2024-11-24 01:14:23,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60
[2024-11-24 01:14:23,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 69 transitions, 292 flow. Second operand has 18 states, 18 states have (on average 27.833333333333332) internal successors, (501), 18 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:23,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:23,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60
[2024-11-24 01:14:23,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:23,773 INFO L124 PetriNetUnfolderBase]: 211/479 cut-off events.
[2024-11-24 01:14:23,773 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES.
[2024-11-24 01:14:23,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 479 events. 211/479 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2160 event pairs, 124 based on Foata normal form. 6/404 useless extension candidates. Maximal degree in co-relation 798. Up to 296 conditions per place.
[2024-11-24 01:14:23,778 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 34 selfloop transitions, 34 changer transitions 0/87 dead transitions.
[2024-11-24 01:14:23,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 464 flow
[2024-11-24 01:14:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-24 01:14:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2024-11-24 01:14:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 308 transitions.
[2024-11-24 01:14:23,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704
[2024-11-24 01:14:23,780 INFO L175 Difference]: Start difference. First operand has 59 places, 69 transitions, 292 flow. Second operand 9 states and 308 transitions.
[2024-11-24 01:14:23,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 464 flow
[2024-11-24 01:14:23,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 87 transitions, 378 flow, removed 19 selfloop flow, removed 5 redundant places.
[2024-11-24 01:14:23,784 INFO L231 Difference]: Finished difference. Result has 60 places, 75 transitions, 304 flow
[2024-11-24 01:14:23,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=304, PETRI_PLACES=60, PETRI_TRANSITIONS=75}
[2024-11-24 01:14:23,785 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places.
[2024-11-24 01:14:23,785 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 75 transitions, 304 flow
[2024-11-24 01:14:23,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 27.833333333333332) internal successors, (501), 18 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:23,785 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:23,786 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:23,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-24 01:14:23,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:23,990 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:23,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:23,991 INFO L85 PathProgramCache]: Analyzing trace with hash 528296451, now seen corresponding path program 1 times
[2024-11-24 01:14:23,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:23,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913246537]
[2024-11-24 01:14:23,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:23,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-24 01:14:24,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913246537]
[2024-11-24 01:14:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913246537] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742610762]
[2024-11-24 01:14:24,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:24,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:24,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:24,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:14:24,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-24 01:14:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:24,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-24 01:14:24,298 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:14:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-24 01:14:24,356 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:14:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-24 01:14:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742610762] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:14:24,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:14:24,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9
[2024-11-24 01:14:24,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441893780]
[2024-11-24 01:14:24,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:14:24,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-24 01:14:24,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:24,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-24 01:14:24,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90
[2024-11-24 01:14:24,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 60
[2024-11-24 01:14:24,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 75 transitions, 304 flow. Second operand has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:24,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:24,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 60
[2024-11-24 01:14:24,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:24,680 INFO L124 PetriNetUnfolderBase]: 202/470 cut-off events.
[2024-11-24 01:14:24,680 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES.
[2024-11-24 01:14:24,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 470 events. 202/470 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2074 event pairs, 124 based on Foata normal form. 9/398 useless extension candidates. Maximal degree in co-relation 734. Up to 299 conditions per place.
[2024-11-24 01:14:24,683 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 35 selfloop transitions, 24 changer transitions 0/78 dead transitions.
[2024-11-24 01:14:24,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 416 flow
[2024-11-24 01:14:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 01:14:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 01:14:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 268 transitions.
[2024-11-24 01:14:24,686 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.638095238095238
[2024-11-24 01:14:24,686 INFO L175 Difference]: Start difference. First operand has 60 places, 75 transitions, 304 flow. Second operand 7 states and 268 transitions.
[2024-11-24 01:14:24,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 416 flow
[2024-11-24 01:14:24,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 370 flow, removed 7 selfloop flow, removed 6 redundant places.
[2024-11-24 01:14:24,691 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 252 flow
[2024-11-24 01:14:24,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=60, PETRI_TRANSITIONS=66}
[2024-11-24 01:14:24,692 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places.
[2024-11-24 01:14:24,693 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 252 flow
[2024-11-24 01:14:24,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.6) internal successors, (316), 10 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:24,693 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:24,693 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:24,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-24 01:14:24,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:24,898 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:24,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:24,899 INFO L85 PathProgramCache]: Analyzing trace with hash -10419398, now seen corresponding path program 2 times
[2024-11-24 01:14:24,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:24,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594295706]
[2024-11-24 01:14:24,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:14:24,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:24,936 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-24 01:14:24,937 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:14:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2024-11-24 01:14:25,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:25,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594295706]
[2024-11-24 01:14:25,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594295706] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:14:25,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:14:25,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 01:14:25,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920372337]
[2024-11-24 01:14:25,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:14:25,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 01:14:25,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:25,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 01:14:25,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 01:14:25,156 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60
[2024-11-24 01:14:25,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:25,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:25,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60
[2024-11-24 01:14:25,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:25,338 INFO L124 PetriNetUnfolderBase]: 328/640 cut-off events.
[2024-11-24 01:14:25,339 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES.
[2024-11-24 01:14:25,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1241 conditions, 640 events. 328/640 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2770 event pairs, 221 based on Foata normal form. 0/591 useless extension candidates. Maximal degree in co-relation 1091. Up to 472 conditions per place.
[2024-11-24 01:14:25,343 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 46 selfloop transitions, 3 changer transitions 0/64 dead transitions.
[2024-11-24 01:14:25,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 346 flow
[2024-11-24 01:14:25,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 01:14:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-24 01:14:25,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions.
[2024-11-24 01:14:25,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4766666666666667
[2024-11-24 01:14:25,344 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 252 flow. Second operand 5 states and 143 transitions.
[2024-11-24 01:14:25,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 346 flow
[2024-11-24 01:14:25,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 298 flow, removed 0 selfloop flow, removed 6 redundant places.
[2024-11-24 01:14:25,348 INFO L231 Difference]: Finished difference. Result has 56 places, 64 transitions, 206 flow
[2024-11-24 01:14:25,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=56, PETRI_TRANSITIONS=64}
[2024-11-24 01:14:25,349 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places.
[2024-11-24 01:14:25,349 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 64 transitions, 206 flow
[2024-11-24 01:14:25,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:25,349 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:25,349 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:25,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-24 01:14:25,349 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:25,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:25,350 INFO L85 PathProgramCache]: Analyzing trace with hash -10419397, now seen corresponding path program 1 times
[2024-11-24 01:14:25,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:25,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706378348]
[2024-11-24 01:14:25,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:25,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2024-11-24 01:14:26,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:26,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706378348]
[2024-11-24 01:14:26,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706378348] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501029503]
[2024-11-24 01:14:26,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:26,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:26,489 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:14:26,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-24 01:14:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:26,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 39 conjuncts are in the unsatisfiable core
[2024-11-24 01:14:26,639 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:14:26,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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
[2024-11-24 01:14:26,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:14:26,800 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size
[2024-11-24 01:14:26,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16
[2024-11-24 01:14:26,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9
[2024-11-24 01:14:26,928 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 01:14:26,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-24 01:14:26,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9
[2024-11-24 01:14:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:27,415 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:14:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:28,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501029503] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:28,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 01:14:28,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 9] total 26
[2024-11-24 01:14:28,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014407463]
[2024-11-24 01:14:28,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:14:28,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-24 01:14:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:28,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-24 01:14:28,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756
[2024-11-24 01:14:29,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60
[2024-11-24 01:14:29,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 64 transitions, 206 flow. Second operand has 11 states, 11 states have (on average 27.90909090909091) internal successors, (307), 11 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:29,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:29,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60
[2024-11-24 01:14:29,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:29,678 INFO L124 PetriNetUnfolderBase]: 578/1065 cut-off events.
[2024-11-24 01:14:29,679 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES.
[2024-11-24 01:14:29,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2021 conditions, 1065 events. 578/1065 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5291 event pairs, 215 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 1889. Up to 440 conditions per place.
[2024-11-24 01:14:29,686 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 62 selfloop transitions, 6 changer transitions 0/82 dead transitions.
[2024-11-24 01:14:29,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 383 flow
[2024-11-24 01:14:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 01:14:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 01:14:29,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions.
[2024-11-24 01:14:29,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.575
[2024-11-24 01:14:29,688 INFO L175 Difference]: Start difference. First operand has 56 places, 64 transitions, 206 flow. Second operand 6 states and 207 transitions.
[2024-11-24 01:14:29,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 383 flow
[2024-11-24 01:14:29,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 378 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-24 01:14:29,691 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 226 flow
[2024-11-24 01:14:29,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=60, PETRI_TRANSITIONS=65}
[2024-11-24 01:14:29,695 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places.
[2024-11-24 01:14:29,695 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 226 flow
[2024-11-24 01:14:29,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.90909090909091) internal successors, (307), 11 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:29,695 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:29,695 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:29,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-24 01:14:29,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:29,896 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:29,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash -323000482, now seen corresponding path program 1 times
[2024-11-24 01:14:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:29,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915753588]
[2024-11-24 01:14:29,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:29,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2024-11-24 01:14:30,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:30,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915753588]
[2024-11-24 01:14:30,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915753588] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:14:30,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:14:30,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 01:14:30,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733406563]
[2024-11-24 01:14:30,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:14:30,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 01:14:30,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:30,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 01:14:30,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-24 01:14:30,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 60
[2024-11-24 01:14:30,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:30,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:30,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 60
[2024-11-24 01:14:30,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:30,398 INFO L124 PetriNetUnfolderBase]: 416/889 cut-off events.
[2024-11-24 01:14:30,398 INFO L125 PetriNetUnfolderBase]: For 211/240 co-relation queries the response was YES.
[2024-11-24 01:14:30,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1769 conditions, 889 events. 416/889 cut-off events. For 211/240 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4877 event pairs, 315 based on Foata normal form. 31/818 useless extension candidates. Maximal degree in co-relation 1634. Up to 616 conditions per place.
[2024-11-24 01:14:30,408 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 45 selfloop transitions, 3 changer transitions 0/63 dead transitions.
[2024-11-24 01:14:30,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 318 flow
[2024-11-24 01:14:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 01:14:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-24 01:14:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions.
[2024-11-24 01:14:30,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49
[2024-11-24 01:14:30,410 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 226 flow. Second operand 5 states and 147 transitions.
[2024-11-24 01:14:30,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 318 flow
[2024-11-24 01:14:30,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 310 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-11-24 01:14:30,413 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 220 flow
[2024-11-24 01:14:30,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=58, PETRI_TRANSITIONS=63}
[2024-11-24 01:14:30,414 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places.
[2024-11-24 01:14:30,415 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 220 flow
[2024-11-24 01:14:30,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:30,416 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:30,416 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:30,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-24 01:14:30,416 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:30,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:30,417 INFO L85 PathProgramCache]: Analyzing trace with hash -323000481, now seen corresponding path program 1 times
[2024-11-24 01:14:30,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:30,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741845438]
[2024-11-24 01:14:30,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:30,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked.
[2024-11-24 01:14:31,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741845438]
[2024-11-24 01:14:31,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741845438] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074007215]
[2024-11-24 01:14:31,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:31,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:31,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:31,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:14:31,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-24 01:14:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:31,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjuncts are in the unsatisfiable core
[2024-11-24 01:14:31,352 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:14:31,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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
[2024-11-24 01:14:31,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:14:31,478 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size
[2024-11-24 01:14:31,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 13
[2024-11-24 01:14:31,494 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 01:14:31,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-24 01:14:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:31,926 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:14:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:32,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074007215] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:32,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 01:14:32,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 23
[2024-11-24 01:14:32,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733734903]
[2024-11-24 01:14:32,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:14:32,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-24 01:14:32,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:32,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-24 01:14:32,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552
[2024-11-24 01:14:32,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 60
[2024-11-24 01:14:32,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 220 flow. Second operand has 10 states, 10 states have (on average 30.1) internal successors, (301), 10 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:32,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:32,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 60
[2024-11-24 01:14:32,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:33,103 INFO L124 PetriNetUnfolderBase]: 400/786 cut-off events.
[2024-11-24 01:14:33,104 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES.
[2024-11-24 01:14:33,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 786 events. 400/786 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3620 event pairs, 169 based on Foata normal form. 26/738 useless extension candidates. Maximal degree in co-relation 1512. Up to 377 conditions per place.
[2024-11-24 01:14:33,109 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 60 selfloop transitions, 5 changer transitions 0/80 dead transitions.
[2024-11-24 01:14:33,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 392 flow
[2024-11-24 01:14:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 01:14:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 01:14:33,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 216 transitions.
[2024-11-24 01:14:33,110 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6
[2024-11-24 01:14:33,111 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 220 flow. Second operand 6 states and 216 transitions.
[2024-11-24 01:14:33,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 392 flow
[2024-11-24 01:14:33,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 387 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-24 01:14:33,113 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 236 flow
[2024-11-24 01:14:33,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=61, PETRI_TRANSITIONS=64}
[2024-11-24 01:14:33,114 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places.
[2024-11-24 01:14:33,115 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 236 flow
[2024-11-24 01:14:33,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.1) internal successors, (301), 10 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:33,116 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:33,116 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:33,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-24 01:14:33,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2024-11-24 01:14:33,317 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:33,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1474909905, now seen corresponding path program 1 times
[2024-11-24 01:14:33,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:33,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794123804]
[2024-11-24 01:14:33,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:33,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked.
[2024-11-24 01:14:33,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:33,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794123804]
[2024-11-24 01:14:33,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794123804] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:33,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937351407]
[2024-11-24 01:14:33,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:33,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:33,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:33,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:14:33,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-24 01:14:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:34,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 39 conjuncts are in the unsatisfiable core
[2024-11-24 01:14:34,017 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:14:34,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:14:34,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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
[2024-11-24 01:14:34,132 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 01:14:34,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-24 01:14:34,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9
[2024-11-24 01:14:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:34,547 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:14:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:35,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937351407] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:35,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 01:14:35,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 9] total 22
[2024-11-24 01:14:35,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025833512]
[2024-11-24 01:14:35,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:14:35,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-24 01:14:35,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:35,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-24 01:14:35,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506
[2024-11-24 01:14:35,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 60
[2024-11-24 01:14:35,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 236 flow. Second operand has 10 states, 10 states have (on average 29.3) internal successors, (293), 10 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:35,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:35,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 60
[2024-11-24 01:14:35,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:35,880 INFO L124 PetriNetUnfolderBase]: 775/1473 cut-off events.
[2024-11-24 01:14:35,880 INFO L125 PetriNetUnfolderBase]: For 996/1099 co-relation queries the response was YES.
[2024-11-24 01:14:35,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3266 conditions, 1473 events. 775/1473 cut-off events. For 996/1099 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8252 event pairs, 315 based on Foata normal form. 0/1283 useless extension candidates. Maximal degree in co-relation 3128. Up to 604 conditions per place.
[2024-11-24 01:14:35,890 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 60 selfloop transitions, 6 changer transitions 0/80 dead transitions.
[2024-11-24 01:14:35,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 80 transitions, 421 flow
[2024-11-24 01:14:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 01:14:35,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 01:14:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions.
[2024-11-24 01:14:35,892 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5805555555555556
[2024-11-24 01:14:35,892 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 236 flow. Second operand 6 states and 209 transitions.
[2024-11-24 01:14:35,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 80 transitions, 421 flow
[2024-11-24 01:14:35,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 80 transitions, 411 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-11-24 01:14:35,895 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 253 flow
[2024-11-24 01:14:35,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=253, PETRI_PLACES=64, PETRI_TRANSITIONS=65}
[2024-11-24 01:14:35,895 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places.
[2024-11-24 01:14:35,896 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 253 flow
[2024-11-24 01:14:35,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.3) internal successors, (293), 10 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:35,896 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:35,896 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:35,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-24 01:14:36,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-11-24 01:14:36,097 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:36,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:36,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1522434035, now seen corresponding path program 1 times
[2024-11-24 01:14:36,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:36,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928334274]
[2024-11-24 01:14:36,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:36,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2024-11-24 01:14:36,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:36,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928334274]
[2024-11-24 01:14:36,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928334274] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:14:36,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:14:36,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-24 01:14:36,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129036899]
[2024-11-24 01:14:36,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:14:36,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 01:14:36,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:36,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 01:14:36,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 01:14:36,276 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60
[2024-11-24 01:14:36,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:36,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:36,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60
[2024-11-24 01:14:36,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:36,484 INFO L124 PetriNetUnfolderBase]: 520/1058 cut-off events.
[2024-11-24 01:14:36,484 INFO L125 PetriNetUnfolderBase]: For 850/952 co-relation queries the response was YES.
[2024-11-24 01:14:36,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1058 events. 520/1058 cut-off events. For 850/952 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5708 event pairs, 406 based on Foata normal form. 36/1017 useless extension candidates. Maximal degree in co-relation 2369. Up to 773 conditions per place.
[2024-11-24 01:14:36,492 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 46 selfloop transitions, 2 changer transitions 0/63 dead transitions.
[2024-11-24 01:14:36,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 345 flow
[2024-11-24 01:14:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-24 01:14:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-24 01:14:36,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions.
[2024-11-24 01:14:36,493 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667
[2024-11-24 01:14:36,493 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 253 flow. Second operand 4 states and 127 transitions.
[2024-11-24 01:14:36,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 345 flow
[2024-11-24 01:14:36,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 337 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-11-24 01:14:36,495 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 245 flow
[2024-11-24 01:14:36,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=61, PETRI_TRANSITIONS=63}
[2024-11-24 01:14:36,498 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places.
[2024-11-24 01:14:36,498 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 245 flow
[2024-11-24 01:14:36,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:36,498 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:36,499 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:36,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-11-24 01:14:36,500 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:36,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:36,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1522434036, now seen corresponding path program 1 times
[2024-11-24 01:14:36,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:36,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259711829]
[2024-11-24 01:14:36,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:36,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2024-11-24 01:14:36,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:36,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259711829]
[2024-11-24 01:14:36,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259711829] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:36,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596713189]
[2024-11-24 01:14:36,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:36,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:36,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:36,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:14:36,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-24 01:14:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:37,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-24 01:14:37,051 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:14:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:37,226 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:14:37,314 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 22 treesize of output 18
[2024-11-24 01:14:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:37,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596713189] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:14:37,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:14:37,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20
[2024-11-24 01:14:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316271673]
[2024-11-24 01:14:37,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:14:37,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-11-24 01:14:37,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:37,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-11-24 01:14:37,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420
[2024-11-24 01:14:38,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 60
[2024-11-24 01:14:38,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 245 flow. Second operand has 21 states, 21 states have (on average 30.333333333333332) internal successors, (637), 21 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:38,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:38,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 60
[2024-11-24 01:14:38,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:38,761 INFO L124 PetriNetUnfolderBase]: 888/1716 cut-off events.
[2024-11-24 01:14:38,761 INFO L125 PetriNetUnfolderBase]: For 1091/1210 co-relation queries the response was YES.
[2024-11-24 01:14:38,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 1716 events. 888/1716 cut-off events. For 1091/1210 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9816 event pairs, 315 based on Foata normal form. 92/1724 useless extension candidates. Maximal degree in co-relation 4021. Up to 650 conditions per place.
[2024-11-24 01:14:38,773 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 74 selfloop transitions, 19 changer transitions 0/107 dead transitions.
[2024-11-24 01:14:38,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 107 transitions, 587 flow
[2024-11-24 01:14:38,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-24 01:14:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-11-24 01:14:38,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 366 transitions.
[2024-11-24 01:14:38,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.61
[2024-11-24 01:14:38,778 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 245 flow. Second operand 10 states and 366 transitions.
[2024-11-24 01:14:38,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 107 transitions, 587 flow
[2024-11-24 01:14:38,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 107 transitions, 584 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-24 01:14:38,782 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 300 flow
[2024-11-24 01:14:38,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=300, PETRI_PLACES=70, PETRI_TRANSITIONS=65}
[2024-11-24 01:14:38,783 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places.
[2024-11-24 01:14:38,783 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 300 flow
[2024-11-24 01:14:38,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 30.333333333333332) internal successors, (637), 21 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:38,784 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:38,784 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:38,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-24 01:14:38,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2024-11-24 01:14:38,984 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:38,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:38,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1165787740, now seen corresponding path program 1 times
[2024-11-24 01:14:38,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:38,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436564994]
[2024-11-24 01:14:38,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:38,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2024-11-24 01:14:39,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:39,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436564994]
[2024-11-24 01:14:39,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436564994] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:39,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531739951]
[2024-11-24 01:14:39,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:39,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:39,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:39,848 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:14:39,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-24 01:14:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:40,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 54 conjuncts are in the unsatisfiable core
[2024-11-24 01:14:40,020 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:14:40,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:14:40,104 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2024-11-24 01:14:40,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14
[2024-11-24 01:14:40,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:14:40,236 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-24 01:14:40,247 INFO L349 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size
[2024-11-24 01:14:40,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 22
[2024-11-24 01:14:40,261 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 01:14:40,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-24 01:14:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:40,864 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:14:41,499 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 10 treesize of output 8
[2024-11-24 01:14:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:41,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531739951] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:14:41,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:14:41,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 28
[2024-11-24 01:14:41,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136829419]
[2024-11-24 01:14:41,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:14:41,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2024-11-24 01:14:41,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:41,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2024-11-24 01:14:41,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=650, Unknown=0, NotChecked=0, Total=870
[2024-11-24 01:14:43,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60
[2024-11-24 01:14:43,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 300 flow. Second operand has 30 states, 30 states have (on average 20.166666666666668) internal successors, (605), 30 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:43,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:43,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60
[2024-11-24 01:14:43,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:45,698 INFO L124 PetriNetUnfolderBase]: 3065/5364 cut-off events.
[2024-11-24 01:14:45,698 INFO L125 PetriNetUnfolderBase]: For 6241/6407 co-relation queries the response was YES.
[2024-11-24 01:14:45,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14285 conditions, 5364 events. 3065/5364 cut-off events. For 6241/6407 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 34848 event pairs, 541 based on Foata normal form. 216/5546 useless extension candidates. Maximal degree in co-relation 14116. Up to 1012 conditions per place.
[2024-11-24 01:14:45,752 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 123 selfloop transitions, 27 changer transitions 0/161 dead transitions.
[2024-11-24 01:14:45,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 161 transitions, 962 flow
[2024-11-24 01:14:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2024-11-24 01:14:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2024-11-24 01:14:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 503 transitions.
[2024-11-24 01:14:45,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4191666666666667
[2024-11-24 01:14:45,755 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 300 flow. Second operand 20 states and 503 transitions.
[2024-11-24 01:14:45,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 161 transitions, 962 flow
[2024-11-24 01:14:45,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 161 transitions, 929 flow, removed 0 selfloop flow, removed 6 redundant places.
[2024-11-24 01:14:45,762 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 376 flow
[2024-11-24 01:14:45,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=376, PETRI_PLACES=88, PETRI_TRANSITIONS=70}
[2024-11-24 01:14:45,764 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 28 predicate places.
[2024-11-24 01:14:45,764 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 376 flow
[2024-11-24 01:14:45,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 20.166666666666668) internal successors, (605), 30 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:45,766 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:45,767 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:45,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-24 01:14:45,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2024-11-24 01:14:45,971 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:45,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash -89217481, now seen corresponding path program 1 times
[2024-11-24 01:14:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:45,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931928131]
[2024-11-24 01:14:45,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:45,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2024-11-24 01:14:46,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:46,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931928131]
[2024-11-24 01:14:46,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931928131] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:46,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226993496]
[2024-11-24 01:14:46,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:46,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:46,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:46,723 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:14:46,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-24 01:14:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:46,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 39 conjuncts are in the unsatisfiable core
[2024-11-24 01:14:46,899 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:14:46,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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
[2024-11-24 01:14:46,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:14:47,026 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size
[2024-11-24 01:14:47,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16
[2024-11-24 01:14:47,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9
[2024-11-24 01:14:47,144 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size
[2024-11-24 01:14:47,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 13
[2024-11-24 01:14:47,161 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 01:14:47,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-24 01:14:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:47,629 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:14:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:48,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226993496] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:48,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-24 01:14:48,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 25
[2024-11-24 01:14:48,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835676]
[2024-11-24 01:14:48,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:14:48,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-24 01:14:48,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:48,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-24 01:14:48,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702
[2024-11-24 01:14:49,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60
[2024-11-24 01:14:49,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 376 flow. Second operand has 11 states, 11 states have (on average 28.272727272727273) internal successors, (311), 11 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:49,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:49,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60
[2024-11-24 01:14:49,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:50,254 INFO L124 PetriNetUnfolderBase]: 4725/8020 cut-off events.
[2024-11-24 01:14:50,254 INFO L125 PetriNetUnfolderBase]: For 15740/16203 co-relation queries the response was YES.
[2024-11-24 01:14:50,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22927 conditions, 8020 events. 4725/8020 cut-off events. For 15740/16203 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 54757 event pairs, 2389 based on Foata normal form. 0/7726 useless extension candidates. Maximal degree in co-relation 22844. Up to 3942 conditions per place.
[2024-11-24 01:14:50,311 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 73 selfloop transitions, 7 changer transitions 0/91 dead transitions.
[2024-11-24 01:14:50,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 662 flow
[2024-11-24 01:14:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 01:14:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 01:14:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions.
[2024-11-24 01:14:50,313 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5638888888888889
[2024-11-24 01:14:50,313 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 376 flow. Second operand 6 states and 203 transitions.
[2024-11-24 01:14:50,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 662 flow
[2024-11-24 01:14:50,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 91 transitions, 626 flow, removed 0 selfloop flow, removed 7 redundant places.
[2024-11-24 01:14:50,328 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 369 flow
[2024-11-24 01:14:50,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=369, PETRI_PLACES=88, PETRI_TRANSITIONS=71}
[2024-11-24 01:14:50,330 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 28 predicate places.
[2024-11-24 01:14:50,330 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 369 flow
[2024-11-24 01:14:50,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.272727272727273) internal successors, (311), 11 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:50,330 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:50,330 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:50,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-24 01:14:50,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-11-24 01:14:50,534 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:50,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:50,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1779680746, now seen corresponding path program 1 times
[2024-11-24 01:14:50,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:50,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055182569]
[2024-11-24 01:14:50,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:50,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked.
[2024-11-24 01:14:50,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:50,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055182569]
[2024-11-24 01:14:50,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055182569] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:50,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419027953]
[2024-11-24 01:14:50,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:50,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:50,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:50,964 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:14:50,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-24 01:14:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:51,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 41 conjuncts are in the unsatisfiable core
[2024-11-24 01:14:51,134 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:14:51,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:14:51,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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
[2024-11-24 01:14:51,247 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 01:14:51,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-24 01:14:51,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9
[2024-11-24 01:14:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:51,712 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:14:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:52,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419027953] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:14:52,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:14:52,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 25
[2024-11-24 01:14:52,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191806145]
[2024-11-24 01:14:52,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:14:52,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2024-11-24 01:14:52,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:52,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2024-11-24 01:14:52,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650
[2024-11-24 01:14:53,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60
[2024-11-24 01:14:53,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 369 flow. Second operand has 26 states, 26 states have (on average 27.115384615384617) internal successors, (705), 26 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:53,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:53,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60
[2024-11-24 01:14:53,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:14:55,249 INFO L124 PetriNetUnfolderBase]: 2890/5394 cut-off events.
[2024-11-24 01:14:55,249 INFO L125 PetriNetUnfolderBase]: For 10382/10725 co-relation queries the response was YES.
[2024-11-24 01:14:55,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16713 conditions, 5394 events. 2890/5394 cut-off events. For 10382/10725 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 37304 event pairs, 626 based on Foata normal form. 258/5549 useless extension candidates. Maximal degree in co-relation 16632. Up to 1299 conditions per place.
[2024-11-24 01:14:55,293 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 120 selfloop transitions, 12 changer transitions 0/148 dead transitions.
[2024-11-24 01:14:55,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 148 transitions, 952 flow
[2024-11-24 01:14:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-24 01:14:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-11-24 01:14:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 434 transitions.
[2024-11-24 01:14:55,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5564102564102564
[2024-11-24 01:14:55,296 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 369 flow. Second operand 13 states and 434 transitions.
[2024-11-24 01:14:55,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 148 transitions, 952 flow
[2024-11-24 01:14:55,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 930 flow, removed 2 selfloop flow, removed 4 redundant places.
[2024-11-24 01:14:55,317 INFO L231 Difference]: Finished difference. Result has 99 places, 72 transitions, 404 flow
[2024-11-24 01:14:55,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=404, PETRI_PLACES=99, PETRI_TRANSITIONS=72}
[2024-11-24 01:14:55,318 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 39 predicate places.
[2024-11-24 01:14:55,318 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 72 transitions, 404 flow
[2024-11-24 01:14:55,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 27.115384615384617) internal successors, (705), 26 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:55,319 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:14:55,319 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:14:55,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-24 01:14:55,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-11-24 01:14:55,524 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:14:55,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:14:55,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1524709863, now seen corresponding path program 1 times
[2024-11-24 01:14:55,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:14:55,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513793097]
[2024-11-24 01:14:55,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:55,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:14:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked.
[2024-11-24 01:14:56,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:14:56,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513793097]
[2024-11-24 01:14:56,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513793097] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:14:56,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25047096]
[2024-11-24 01:14:56,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:14:56,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:14:56,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:14:56,024 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:14:56,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-24 01:14:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:14:56,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 41 conjuncts are in the unsatisfiable core
[2024-11-24 01:14:56,228 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:14:56,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:14:56,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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
[2024-11-24 01:14:56,359 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size
[2024-11-24 01:14:56,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 13
[2024-11-24 01:14:56,378 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 01:14:56,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-24 01:14:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:56,842 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:14:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:14:57,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25047096] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:14:57,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:14:57,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 25
[2024-11-24 01:14:57,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869422657]
[2024-11-24 01:14:57,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:14:57,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2024-11-24 01:14:57,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:14:57,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2024-11-24 01:14:57,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650
[2024-11-24 01:14:58,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60
[2024-11-24 01:14:58,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 72 transitions, 404 flow. Second operand has 26 states, 26 states have (on average 26.46153846153846) internal successors, (688), 26 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:14:58,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:14:58,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60
[2024-11-24 01:14:58,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:15:00,189 INFO L124 PetriNetUnfolderBase]: 5665/9820 cut-off events.
[2024-11-24 01:15:00,190 INFO L125 PetriNetUnfolderBase]: For 25405/26460 co-relation queries the response was YES.
[2024-11-24 01:15:00,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30781 conditions, 9820 events. 5665/9820 cut-off events. For 25405/26460 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 69948 event pairs, 1204 based on Foata normal form. 471/10195 useless extension candidates. Maximal degree in co-relation 30699. Up to 1950 conditions per place.
[2024-11-24 01:15:00,261 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 125 selfloop transitions, 13 changer transitions 0/152 dead transitions.
[2024-11-24 01:15:00,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 152 transitions, 1158 flow
[2024-11-24 01:15:00,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-24 01:15:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-11-24 01:15:00,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 417 transitions.
[2024-11-24 01:15:00,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346153846153846
[2024-11-24 01:15:00,264 INFO L175 Difference]: Start difference. First operand has 99 places, 72 transitions, 404 flow. Second operand 13 states and 417 transitions.
[2024-11-24 01:15:00,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 152 transitions, 1158 flow
[2024-11-24 01:15:00,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 152 transitions, 1104 flow, removed 5 selfloop flow, removed 6 redundant places.
[2024-11-24 01:15:00,294 INFO L231 Difference]: Finished difference. Result has 109 places, 74 transitions, 447 flow
[2024-11-24 01:15:00,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=447, PETRI_PLACES=109, PETRI_TRANSITIONS=74}
[2024-11-24 01:15:00,294 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 49 predicate places.
[2024-11-24 01:15:00,295 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 74 transitions, 447 flow
[2024-11-24 01:15:00,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 26.46153846153846) internal successors, (688), 26 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:00,295 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:15:00,295 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:15:00,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-24 01:15:00,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2024-11-24 01:15:00,496 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:15:00,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:15:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1529226229, now seen corresponding path program 1 times
[2024-11-24 01:15:00,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:15:00,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294263728]
[2024-11-24 01:15:00,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:15:00,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:15:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:15:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2024-11-24 01:15:00,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:15:00,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294263728]
[2024-11-24 01:15:00,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294263728] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:15:00,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790640943]
[2024-11-24 01:15:00,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:15:00,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:15:00,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:15:00,796 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:15:00,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-24 01:15:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:15:00,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-24 01:15:00,976 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:15:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:15:01,182 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:15:01,266 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 22 treesize of output 18
[2024-11-24 01:15:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:15:01,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790640943] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:15:01,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:15:01,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20
[2024-11-24 01:15:01,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900172340]
[2024-11-24 01:15:01,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:15:01,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-11-24 01:15:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:15:01,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-11-24 01:15:01,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420
[2024-11-24 01:15:02,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 60
[2024-11-24 01:15:02,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 74 transitions, 447 flow. Second operand has 21 states, 21 states have (on average 30.61904761904762) internal successors, (643), 21 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:02,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:15:02,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 60
[2024-11-24 01:15:02,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:15:03,722 INFO L124 PetriNetUnfolderBase]: 6204/11800 cut-off events.
[2024-11-24 01:15:03,722 INFO L125 PetriNetUnfolderBase]: For 32626/33810 co-relation queries the response was YES.
[2024-11-24 01:15:03,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36945 conditions, 11800 events. 6204/11800 cut-off events. For 32626/33810 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 96188 event pairs, 2903 based on Foata normal form. 644/12231 useless extension candidates. Maximal degree in co-relation 36859. Up to 4940 conditions per place.
[2024-11-24 01:15:03,796 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 89 selfloop transitions, 20 changer transitions 0/126 dead transitions.
[2024-11-24 01:15:03,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 126 transitions, 1007 flow
[2024-11-24 01:15:03,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-24 01:15:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-11-24 01:15:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 362 transitions.
[2024-11-24 01:15:03,798 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6033333333333334
[2024-11-24 01:15:03,798 INFO L175 Difference]: Start difference. First operand has 109 places, 74 transitions, 447 flow. Second operand 10 states and 362 transitions.
[2024-11-24 01:15:03,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 126 transitions, 1007 flow
[2024-11-24 01:15:03,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 126 transitions, 963 flow, removed 6 selfloop flow, removed 10 redundant places.
[2024-11-24 01:15:03,844 INFO L231 Difference]: Finished difference. Result has 110 places, 76 transitions, 483 flow
[2024-11-24 01:15:03,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=483, PETRI_PLACES=110, PETRI_TRANSITIONS=76}
[2024-11-24 01:15:03,845 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 50 predicate places.
[2024-11-24 01:15:03,845 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 76 transitions, 483 flow
[2024-11-24 01:15:03,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 30.61904761904762) internal successors, (643), 21 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:03,845 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:15:03,845 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:15:03,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-24 01:15:04,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-11-24 01:15:04,049 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:15:04,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:15:04,049 INFO L85 PathProgramCache]: Analyzing trace with hash 707620602, now seen corresponding path program 1 times
[2024-11-24 01:15:04,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:15:04,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391844748]
[2024-11-24 01:15:04,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:15:04,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:15:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:15:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2024-11-24 01:15:04,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:15:04,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391844748]
[2024-11-24 01:15:04,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391844748] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:15:04,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982553103]
[2024-11-24 01:15:04,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:15:04,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:15:04,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:15:04,708 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:15:04,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-24 01:15:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:15:04,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 41 conjuncts are in the unsatisfiable core
[2024-11-24 01:15:04,879 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:15:04,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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
[2024-11-24 01:15:04,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:15:04,968 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-24 01:15:04,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9
[2024-11-24 01:15:04,984 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size
[2024-11-24 01:15:04,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16
[2024-11-24 01:15:05,068 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 01:15:05,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-24 01:15:05,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9
[2024-11-24 01:15:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:15:05,583 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:15:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:15:06,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982553103] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:15:06,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:15:06,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 28
[2024-11-24 01:15:06,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436889471]
[2024-11-24 01:15:06,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:15:06,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2024-11-24 01:15:06,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:15:06,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2024-11-24 01:15:06,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870
[2024-11-24 01:15:08,383 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60
[2024-11-24 01:15:08,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 76 transitions, 483 flow. Second operand has 30 states, 30 states have (on average 23.566666666666666) internal successors, (707), 30 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:08,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:15:08,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60
[2024-11-24 01:15:08,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:15:13,452 INFO L124 PetriNetUnfolderBase]: 16365/27404 cut-off events.
[2024-11-24 01:15:13,452 INFO L125 PetriNetUnfolderBase]: For 76187/78397 co-relation queries the response was YES.
[2024-11-24 01:15:13,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90893 conditions, 27404 events. 16365/27404 cut-off events. For 76187/78397 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 216552 event pairs, 4073 based on Foata normal form. 1296/28647 useless extension candidates. Maximal degree in co-relation 90799. Up to 6348 conditions per place.
[2024-11-24 01:15:13,668 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 145 selfloop transitions, 19 changer transitions 0/176 dead transitions.
[2024-11-24 01:15:13,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 176 transitions, 1473 flow
[2024-11-24 01:15:13,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-24 01:15:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-11-24 01:15:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 383 transitions.
[2024-11-24 01:15:13,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.491025641025641
[2024-11-24 01:15:13,670 INFO L175 Difference]: Start difference. First operand has 110 places, 76 transitions, 483 flow. Second operand 13 states and 383 transitions.
[2024-11-24 01:15:13,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 176 transitions, 1473 flow
[2024-11-24 01:15:13,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 176 transitions, 1440 flow, removed 0 selfloop flow, removed 6 redundant places.
[2024-11-24 01:15:13,789 INFO L231 Difference]: Finished difference. Result has 120 places, 78 transitions, 519 flow
[2024-11-24 01:15:13,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=519, PETRI_PLACES=120, PETRI_TRANSITIONS=78}
[2024-11-24 01:15:13,789 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 60 predicate places.
[2024-11-24 01:15:13,789 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 78 transitions, 519 flow
[2024-11-24 01:15:13,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 23.566666666666666) internal successors, (707), 30 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:13,790 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:15:13,790 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:15:13,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-11-24 01:15:13,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-11-24 01:15:13,990 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:15:13,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:15:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash -818571212, now seen corresponding path program 1 times
[2024-11-24 01:15:13,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:15:13,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857274191]
[2024-11-24 01:15:13,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:15:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:15:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:15:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2024-11-24 01:15:14,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:15:14,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857274191]
[2024-11-24 01:15:14,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857274191] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:15:14,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306738010]
[2024-11-24 01:15:14,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:15:14,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:15:14,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:15:14,598 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:15:14,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-24 01:15:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:15:14,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-24 01:15:14,796 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:15:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:15:15,061 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:15:15,242 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 24 treesize of output 20
[2024-11-24 01:15:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:15:15,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306738010] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:15:15,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:15:15,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 27
[2024-11-24 01:15:15,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517915934]
[2024-11-24 01:15:15,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:15:15,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2024-11-24 01:15:15,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:15:15,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2024-11-24 01:15:15,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756
[2024-11-24 01:15:16,591 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 60
[2024-11-24 01:15:16,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 78 transitions, 519 flow. Second operand has 28 states, 28 states have (on average 30.0) internal successors, (840), 28 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:16,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:15:16,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 60
[2024-11-24 01:15:16,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:15:20,742 INFO L124 PetriNetUnfolderBase]: 10683/20444 cut-off events.
[2024-11-24 01:15:20,742 INFO L125 PetriNetUnfolderBase]: For 70739/72686 co-relation queries the response was YES.
[2024-11-24 01:15:20,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72415 conditions, 20444 events. 10683/20444 cut-off events. For 70739/72686 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 176958 event pairs, 2437 based on Foata normal form. 957/21039 useless extension candidates. Maximal degree in co-relation 72321. Up to 4405 conditions per place.
[2024-11-24 01:15:20,946 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 156 selfloop transitions, 23 changer transitions 0/197 dead transitions.
[2024-11-24 01:15:20,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 197 transitions, 1678 flow
[2024-11-24 01:15:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-24 01:15:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-11-24 01:15:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 496 transitions.
[2024-11-24 01:15:20,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6358974358974359
[2024-11-24 01:15:20,949 INFO L175 Difference]: Start difference. First operand has 120 places, 78 transitions, 519 flow. Second operand 13 states and 496 transitions.
[2024-11-24 01:15:20,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 197 transitions, 1678 flow
[2024-11-24 01:15:21,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 197 transitions, 1592 flow, removed 12 selfloop flow, removed 10 redundant places.
[2024-11-24 01:15:21,098 INFO L231 Difference]: Finished difference. Result has 125 places, 80 transitions, 561 flow
[2024-11-24 01:15:21,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=561, PETRI_PLACES=125, PETRI_TRANSITIONS=80}
[2024-11-24 01:15:21,099 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 65 predicate places.
[2024-11-24 01:15:21,099 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 80 transitions, 561 flow
[2024-11-24 01:15:21,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 30.0) internal successors, (840), 28 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:21,099 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:15:21,099 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:15:21,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2024-11-24 01:15:21,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:15:21,300 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:15:21,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:15:21,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1763123925, now seen corresponding path program 1 times
[2024-11-24 01:15:21,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:15:21,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277074359]
[2024-11-24 01:15:21,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:15:21,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:15:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:15:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2024-11-24 01:15:21,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:15:21,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277074359]
[2024-11-24 01:15:21,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277074359] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:15:21,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145518213]
[2024-11-24 01:15:21,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:15:21,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:15:21,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:15:21,926 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:15:21,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-24 01:15:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:15:22,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 42 conjuncts are in the unsatisfiable core
[2024-11-24 01:15:22,157 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:15:22,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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
[2024-11-24 01:15:22,356 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size
[2024-11-24 01:15:22,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 13
[2024-11-24 01:15:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:15:22,538 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:15:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2024-11-24 01:15:22,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145518213] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:15:22,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:15:22,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 6] total 21
[2024-11-24 01:15:22,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181592999]
[2024-11-24 01:15:22,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:15:22,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-11-24 01:15:22,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:15:22,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-11-24 01:15:22,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462
[2024-11-24 01:15:24,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 60
[2024-11-24 01:15:24,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 80 transitions, 561 flow. Second operand has 22 states, 22 states have (on average 30.318181818181817) internal successors, (667), 22 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:24,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:15:24,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 60
[2024-11-24 01:15:24,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:15:29,348 INFO L124 PetriNetUnfolderBase]: 12849/24473 cut-off events.
[2024-11-24 01:15:29,348 INFO L125 PetriNetUnfolderBase]: For 94643/96875 co-relation queries the response was YES.
[2024-11-24 01:15:29,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89582 conditions, 24473 events. 12849/24473 cut-off events. For 94643/96875 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 215363 event pairs, 3452 based on Foata normal form. 1143/25339 useless extension candidates. Maximal degree in co-relation 89481. Up to 5988 conditions per place.
[2024-11-24 01:15:29,611 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 158 selfloop transitions, 23 changer transitions 0/199 dead transitions.
[2024-11-24 01:15:29,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 199 transitions, 1839 flow
[2024-11-24 01:15:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-24 01:15:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-11-24 01:15:29,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 486 transitions.
[2024-11-24 01:15:29,613 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6230769230769231
[2024-11-24 01:15:29,613 INFO L175 Difference]: Start difference. First operand has 125 places, 80 transitions, 561 flow. Second operand 13 states and 486 transitions.
[2024-11-24 01:15:29,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 199 transitions, 1839 flow
[2024-11-24 01:15:29,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 199 transitions, 1770 flow, removed 0 selfloop flow, removed 9 redundant places.
[2024-11-24 01:15:29,998 INFO L231 Difference]: Finished difference. Result has 131 places, 82 transitions, 600 flow
[2024-11-24 01:15:29,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=600, PETRI_PLACES=131, PETRI_TRANSITIONS=82}
[2024-11-24 01:15:29,999 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 71 predicate places.
[2024-11-24 01:15:29,999 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 82 transitions, 600 flow
[2024-11-24 01:15:29,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 30.318181818181817) internal successors, (667), 22 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:29,999 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:15:29,999 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:15:30,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2024-11-24 01:15:30,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:15:30,204 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:15:30,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:15:30,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1832514043, now seen corresponding path program 2 times
[2024-11-24 01:15:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:15:30,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820879177]
[2024-11-24 01:15:30,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:15:30,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:15:30,250 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 01:15:30,250 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:15:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked.
[2024-11-24 01:15:31,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:15:31,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820879177]
[2024-11-24 01:15:31,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820879177] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:15:31,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006931395]
[2024-11-24 01:15:31,038 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:15:31,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:15:31,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:15:31,040 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:15:31,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-24 01:15:31,250 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 01:15:31,250 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:15:31,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 47 conjuncts are in the unsatisfiable core
[2024-11-24 01:15:31,260 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:15:31,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:15:31,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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
[2024-11-24 01:15:31,356 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size
[2024-11-24 01:15:31,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21
[2024-11-24 01:15:31,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9
[2024-11-24 01:15:31,553 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2024-11-24 01:15:31,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18
[2024-11-24 01:15:31,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9
[2024-11-24 01:15:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 20 proven. 31 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:15:32,161 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:15:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:15:33,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006931395] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:15:33,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:15:33,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 35
[2024-11-24 01:15:33,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922280384]
[2024-11-24 01:15:33,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:15:33,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2024-11-24 01:15:33,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:15:33,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2024-11-24 01:15:33,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1028, Unknown=0, NotChecked=0, Total=1332
[2024-11-24 01:15:34,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60
[2024-11-24 01:15:34,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 82 transitions, 600 flow. Second operand has 37 states, 37 states have (on average 22.513513513513512) internal successors, (833), 37 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:34,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:15:34,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60
[2024-11-24 01:15:34,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:15:45,056 INFO L124 PetriNetUnfolderBase]: 35878/53076 cut-off events.
[2024-11-24 01:15:45,056 INFO L125 PetriNetUnfolderBase]: For 242214/247058 co-relation queries the response was YES.
[2024-11-24 01:15:45,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212694 conditions, 53076 events. 35878/53076 cut-off events. For 242214/247058 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 383571 event pairs, 702 based on Foata normal form. 1044/50927 useless extension candidates. Maximal degree in co-relation 212590. Up to 8285 conditions per place.
[2024-11-24 01:15:45,683 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 259 selfloop transitions, 21 changer transitions 0/291 dead transitions.
[2024-11-24 01:15:45,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 291 transitions, 2693 flow
[2024-11-24 01:15:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-11-24 01:15:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2024-11-24 01:15:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 494 transitions.
[2024-11-24 01:15:45,684 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5145833333333333
[2024-11-24 01:15:45,684 INFO L175 Difference]: Start difference. First operand has 131 places, 82 transitions, 600 flow. Second operand 16 states and 494 transitions.
[2024-11-24 01:15:45,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 291 transitions, 2693 flow
[2024-11-24 01:15:46,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 291 transitions, 2590 flow, removed 0 selfloop flow, removed 13 redundant places.
[2024-11-24 01:15:46,182 INFO L231 Difference]: Finished difference. Result has 133 places, 83 transitions, 595 flow
[2024-11-24 01:15:46,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=595, PETRI_PLACES=133, PETRI_TRANSITIONS=83}
[2024-11-24 01:15:46,183 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 73 predicate places.
[2024-11-24 01:15:46,183 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 83 transitions, 595 flow
[2024-11-24 01:15:46,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 22.513513513513512) internal successors, (833), 37 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:46,184 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:15:46,184 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:15:46,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2024-11-24 01:15:46,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:15:46,389 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:15:46,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:15:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1624894457, now seen corresponding path program 1 times
[2024-11-24 01:15:46,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:15:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487782871]
[2024-11-24 01:15:46,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:15:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:15:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:15:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2024-11-24 01:15:46,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:15:46,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487782871]
[2024-11-24 01:15:46,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487782871] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:15:46,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:15:46,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 01:15:46,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821482813]
[2024-11-24 01:15:46,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:15:46,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 01:15:46,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:15:46,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 01:15:46,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-24 01:15:46,583 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 60
[2024-11-24 01:15:46,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 83 transitions, 595 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:46,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:15:46,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 60
[2024-11-24 01:15:46,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:15:50,716 INFO L124 PetriNetUnfolderBase]: 14188/24562 cut-off events.
[2024-11-24 01:15:50,716 INFO L125 PetriNetUnfolderBase]: For 112719/116024 co-relation queries the response was YES.
[2024-11-24 01:15:50,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93773 conditions, 24562 events. 14188/24562 cut-off events. For 112719/116024 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 199763 event pairs, 10966 based on Foata normal form. 36/23189 useless extension candidates. Maximal degree in co-relation 93676. Up to 17850 conditions per place.
[2024-11-24 01:15:50,887 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 82 selfloop transitions, 2 changer transitions 1/104 dead transitions.
[2024-11-24 01:15:50,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 104 transitions, 941 flow
[2024-11-24 01:15:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 01:15:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-24 01:15:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions.
[2024-11-24 01:15:50,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667
[2024-11-24 01:15:50,889 INFO L175 Difference]: Start difference. First operand has 133 places, 83 transitions, 595 flow. Second operand 3 states and 129 transitions.
[2024-11-24 01:15:50,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 104 transitions, 941 flow
[2024-11-24 01:15:51,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 104 transitions, 897 flow, removed 0 selfloop flow, removed 12 redundant places.
[2024-11-24 01:15:51,120 INFO L231 Difference]: Finished difference. Result has 124 places, 83 transitions, 568 flow
[2024-11-24 01:15:51,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=124, PETRI_TRANSITIONS=83}
[2024-11-24 01:15:51,121 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 64 predicate places.
[2024-11-24 01:15:51,121 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 83 transitions, 568 flow
[2024-11-24 01:15:51,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:51,121 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:15:51,121 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:15:51,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2024-11-24 01:15:51,121 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:15:51,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:15:51,122 INFO L85 PathProgramCache]: Analyzing trace with hash 973361311, now seen corresponding path program 2 times
[2024-11-24 01:15:51,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:15:51,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988471190]
[2024-11-24 01:15:51,122 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:15:51,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:15:51,143 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-24 01:15:51,143 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:15:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked.
[2024-11-24 01:15:51,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:15:51,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988471190]
[2024-11-24 01:15:51,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988471190] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:15:51,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288481010]
[2024-11-24 01:15:51,324 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:15:51,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:15:51,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:15:51,326 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:15:51,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-11-24 01:15:51,503 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-24 01:15:51,503 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:15:51,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 40 conjuncts are in the unsatisfiable core
[2024-11-24 01:15:51,507 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:15:51,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:15:51,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:15:51,619 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2024-11-24 01:15:51,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14
[2024-11-24 01:15:51,645 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size
[2024-11-24 01:15:51,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21
[2024-11-24 01:15:51,837 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-24 01:15:51,838 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-24 01:15:51,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17
[2024-11-24 01:15:51,857 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2024-11-24 01:15:51,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18
[2024-11-24 01:15:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked.
[2024-11-24 01:15:52,131 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:15:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked.
[2024-11-24 01:15:54,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288481010] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:15:54,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:15:54,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12
[2024-11-24 01:15:54,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197825196]
[2024-11-24 01:15:54,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:15:54,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-24 01:15:54,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:15:54,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-24 01:15:54,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182
[2024-11-24 01:15:55,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60
[2024-11-24 01:15:55,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 83 transitions, 568 flow. Second operand has 14 states, 14 states have (on average 24.642857142857142) internal successors, (345), 14 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:15:55,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:15:55,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60
[2024-11-24 01:15:55,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:16:01,355 INFO L124 PetriNetUnfolderBase]: 24976/40202 cut-off events.
[2024-11-24 01:16:01,355 INFO L125 PetriNetUnfolderBase]: For 159187/161498 co-relation queries the response was YES.
[2024-11-24 01:16:01,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158043 conditions, 40202 events. 24976/40202 cut-off events. For 159187/161498 co-relation queries the response was YES. Maximal size of possible extension queue 1064. Compared 316362 event pairs, 11116 based on Foata normal form. 732/40094 useless extension candidates. Maximal degree in co-relation 157948. Up to 17562 conditions per place.
[2024-11-24 01:16:01,945 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 101 selfloop transitions, 16 changer transitions 0/130 dead transitions.
[2024-11-24 01:16:01,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 130 transitions, 1171 flow
[2024-11-24 01:16:01,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-24 01:16:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-24 01:16:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions.
[2024-11-24 01:16:01,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47708333333333336
[2024-11-24 01:16:01,947 INFO L175 Difference]: Start difference. First operand has 124 places, 83 transitions, 568 flow. Second operand 8 states and 229 transitions.
[2024-11-24 01:16:01,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 130 transitions, 1171 flow
[2024-11-24 01:16:02,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 130 transitions, 1143 flow, removed 4 selfloop flow, removed 6 redundant places.
[2024-11-24 01:16:02,250 INFO L231 Difference]: Finished difference. Result has 125 places, 83 transitions, 586 flow
[2024-11-24 01:16:02,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=586, PETRI_PLACES=125, PETRI_TRANSITIONS=83}
[2024-11-24 01:16:02,250 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 65 predicate places.
[2024-11-24 01:16:02,251 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 83 transitions, 586 flow
[2024-11-24 01:16:02,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.642857142857142) internal successors, (345), 14 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:16:02,251 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:16:02,251 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:02,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-11-24 01:16:02,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:16:02,451 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:16:02,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:16:02,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1470732463, now seen corresponding path program 2 times
[2024-11-24 01:16:02,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:16:02,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036315553]
[2024-11-24 01:16:02,452 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:16:02,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:16:02,503 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 01:16:02,503 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:16:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked.
[2024-11-24 01:16:03,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:16:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036315553]
[2024-11-24 01:16:03,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036315553] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:16:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609691263]
[2024-11-24 01:16:03,688 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:16:03,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:16:03,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:16:03,698 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:16:03,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-11-24 01:16:03,992 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 01:16:03,992 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:16:03,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 32 conjuncts are in the unsatisfiable core
[2024-11-24 01:16:04,001 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:16:04,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2024-11-24 01:16:04,338 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 01:16:04,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-24 01:16:04,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 11
[2024-11-24 01:16:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 20 proven. 31 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:16:04,758 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:16:05,192 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 52 treesize of output 48
[2024-11-24 01:16:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 20 proven. 31 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-24 01:16:05,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609691263] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:16:05,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:16:05,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 13] total 35
[2024-11-24 01:16:05,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135059059]
[2024-11-24 01:16:05,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:16:05,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2024-11-24 01:16:05,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:16:05,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2024-11-24 01:16:05,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260
[2024-11-24 01:16:10,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 01:16:16,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 01:16:20,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 01:16:20,402 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60
[2024-11-24 01:16:20,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 83 transitions, 586 flow. Second operand has 36 states, 36 states have (on average 22.63888888888889) internal successors, (815), 36 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:16:20,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:16:20,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60
[2024-11-24 01:16:20,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:16:27,465 INFO L124 PetriNetUnfolderBase]: 26824/39644 cut-off events.
[2024-11-24 01:16:27,465 INFO L125 PetriNetUnfolderBase]: For 186809/191101 co-relation queries the response was YES.
[2024-11-24 01:16:27,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151962 conditions, 39644 events. 26824/39644 cut-off events. For 186809/191101 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 274066 event pairs, 576 based on Foata normal form. 884/37516 useless extension candidates. Maximal degree in co-relation 151867. Up to 6202 conditions per place.
[2024-11-24 01:16:27,752 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 223 selfloop transitions, 25 changer transitions 0/262 dead transitions.
[2024-11-24 01:16:27,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 262 transitions, 2410 flow
[2024-11-24 01:16:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2024-11-24 01:16:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2024-11-24 01:16:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 562 transitions.
[2024-11-24 01:16:27,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4683333333333333
[2024-11-24 01:16:27,754 INFO L175 Difference]: Start difference. First operand has 125 places, 83 transitions, 586 flow. Second operand 20 states and 562 transitions.
[2024-11-24 01:16:27,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 262 transitions, 2410 flow
[2024-11-24 01:16:28,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 262 transitions, 2260 flow, removed 1 selfloop flow, removed 10 redundant places.
[2024-11-24 01:16:28,074 INFO L231 Difference]: Finished difference. Result has 134 places, 83 transitions, 585 flow
[2024-11-24 01:16:28,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=585, PETRI_PLACES=134, PETRI_TRANSITIONS=83}
[2024-11-24 01:16:28,074 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 74 predicate places.
[2024-11-24 01:16:28,074 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 83 transitions, 585 flow
[2024-11-24 01:16:28,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 22.63888888888889) internal successors, (815), 36 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:16:28,075 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:16:28,075 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:28,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-11-24 01:16:28,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:16:28,275 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:16:28,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:16:28,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1134296666, now seen corresponding path program 1 times
[2024-11-24 01:16:28,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:16:28,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683094705]
[2024-11-24 01:16:28,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:16:28,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:16:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:16:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2024-11-24 01:16:28,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:16:28,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683094705]
[2024-11-24 01:16:28,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683094705] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:16:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210794230]
[2024-11-24 01:16:28,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:16:28,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:16:28,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:16:28,544 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:16:28,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-11-24 01:16:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:16:28,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-24 01:16:28,767 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:16:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2024-11-24 01:16:28,984 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:16:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2024-11-24 01:16:29,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210794230] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:16:29,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:16:29,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 6] total 15
[2024-11-24 01:16:29,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503954260]
[2024-11-24 01:16:29,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:16:29,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-24 01:16:29,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:16:29,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-24 01:16:29,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210
[2024-11-24 01:16:29,289 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 60
[2024-11-24 01:16:29,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 83 transitions, 585 flow. Second operand has 15 states, 15 states have (on average 30.466666666666665) internal successors, (457), 15 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:16:29,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:16:29,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 60
[2024-11-24 01:16:29,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:16:37,723 INFO L124 PetriNetUnfolderBase]: 31964/53993 cut-off events.
[2024-11-24 01:16:37,723 INFO L125 PetriNetUnfolderBase]: For 215409/220421 co-relation queries the response was YES.
[2024-11-24 01:16:37,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192456 conditions, 53993 events. 31964/53993 cut-off events. For 215409/220421 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 454397 event pairs, 1176 based on Foata normal form. 512/50303 useless extension candidates. Maximal degree in co-relation 192360. Up to 18650 conditions per place.
[2024-11-24 01:16:38,143 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 240 selfloop transitions, 71 changer transitions 1/328 dead transitions.
[2024-11-24 01:16:38,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 328 transitions, 2964 flow
[2024-11-24 01:16:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-11-24 01:16:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2024-11-24 01:16:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 657 transitions.
[2024-11-24 01:16:38,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333
[2024-11-24 01:16:38,145 INFO L175 Difference]: Start difference. First operand has 134 places, 83 transitions, 585 flow. Second operand 18 states and 657 transitions.
[2024-11-24 01:16:38,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 328 transitions, 2964 flow
[2024-11-24 01:16:38,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 328 transitions, 2853 flow, removed 6 selfloop flow, removed 13 redundant places.
[2024-11-24 01:16:38,919 INFO L231 Difference]: Finished difference. Result has 142 places, 148 transitions, 1226 flow
[2024-11-24 01:16:38,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1226, PETRI_PLACES=142, PETRI_TRANSITIONS=148}
[2024-11-24 01:16:38,920 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 82 predicate places.
[2024-11-24 01:16:38,921 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 148 transitions, 1226 flow
[2024-11-24 01:16:38,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.466666666666665) internal successors, (457), 15 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:16:38,921 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:16:38,921 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:38,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2024-11-24 01:16:39,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e007263-4f81-4bc7-a240-8a6a3097e4b5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:16:39,122 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:16:39,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:16:39,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1757197350, now seen corresponding path program 2 times
[2024-11-24 01:16:39,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:16:39,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207473960]
[2024-11-24 01:16:39,123 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 01:16:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:16:39,162 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-24 01:16:39,164 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:16:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2024-11-24 01:16:39,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:16:39,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207473960]
[2024-11-24 01:16:39,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207473960] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:16:39,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:16:39,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 01:16:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626124559]
[2024-11-24 01:16:39,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:16:39,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 01:16:39,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:16:39,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 01:16:39,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-24 01:16:39,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 60
[2024-11-24 01:16:39,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 148 transitions, 1226 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:16:39,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:16:39,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 60
[2024-11-24 01:16:39,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:16:46,998 INFO L124 PetriNetUnfolderBase]: 22855/42039 cut-off events.
[2024-11-24 01:16:46,998 INFO L125 PetriNetUnfolderBase]: For 233832/237758 co-relation queries the response was YES.
[2024-11-24 01:16:47,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176373 conditions, 42039 events. 22855/42039 cut-off events. For 233832/237758 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 387132 event pairs, 11476 based on Foata normal form. 65/40513 useless extension candidates. Maximal degree in co-relation 176272. Up to 26574 conditions per place.
[2024-11-24 01:16:47,408 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 234 selfloop transitions, 3 changer transitions 0/277 dead transitions.
[2024-11-24 01:16:47,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 277 transitions, 3055 flow
[2024-11-24 01:16:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-24 01:16:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-24 01:16:47,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions.
[2024-11-24 01:16:47,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7208333333333333
[2024-11-24 01:16:47,409 INFO L175 Difference]: Start difference. First operand has 142 places, 148 transitions, 1226 flow. Second operand 4 states and 173 transitions.
[2024-11-24 01:16:47,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 277 transitions, 3055 flow
[2024-11-24 01:16:48,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 277 transitions, 3013 flow, removed 4 selfloop flow, removed 3 redundant places.
[2024-11-24 01:16:48,731 INFO L231 Difference]: Finished difference. Result has 144 places, 149 transitions, 1232 flow
[2024-11-24 01:16:48,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1232, PETRI_PLACES=144, PETRI_TRANSITIONS=149}
[2024-11-24 01:16:48,732 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 84 predicate places.
[2024-11-24 01:16:48,732 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 149 transitions, 1232 flow
[2024-11-24 01:16:48,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:16:48,732 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:16:48,733 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:48,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2024-11-24 01:16:48,733 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:16:48,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:16:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1410942848, now seen corresponding path program 3 times
[2024-11-24 01:16:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:16:48,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094507376]
[2024-11-24 01:16:48,734 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 01:16:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:16:48,760 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s)
[2024-11-24 01:16:48,760 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:16:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2024-11-24 01:16:48,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:16:48,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094507376]
[2024-11-24 01:16:48,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094507376] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:16:48,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:16:48,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 01:16:48,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725840276]
[2024-11-24 01:16:48,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:16:48,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 01:16:48,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:16:48,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 01:16:48,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 01:16:48,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 60
[2024-11-24 01:16:48,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 149 transitions, 1232 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:16:48,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:16:48,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 60
[2024-11-24 01:16:48,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:16:56,424 INFO L124 PetriNetUnfolderBase]: 24083/46572 cut-off events.
[2024-11-24 01:16:56,424 INFO L125 PetriNetUnfolderBase]: For 247302/251778 co-relation queries the response was YES.
[2024-11-24 01:16:56,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194195 conditions, 46572 events. 24083/46572 cut-off events. For 247302/251778 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 452563 event pairs, 4112 based on Foata normal form. 650/46304 useless extension candidates. Maximal degree in co-relation 194092. Up to 29196 conditions per place.
[2024-11-24 01:16:56,851 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 178 selfloop transitions, 10 changer transitions 0/228 dead transitions.
[2024-11-24 01:16:56,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 228 transitions, 2413 flow
[2024-11-24 01:16:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-24 01:16:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-24 01:16:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions.
[2024-11-24 01:16:56,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875
[2024-11-24 01:16:56,852 INFO L175 Difference]: Start difference. First operand has 144 places, 149 transitions, 1232 flow. Second operand 4 states and 165 transitions.
[2024-11-24 01:16:56,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 228 transitions, 2413 flow
[2024-11-24 01:16:58,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 228 transitions, 2403 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-24 01:16:58,565 INFO L231 Difference]: Finished difference. Result has 147 places, 151 transitions, 1283 flow
[2024-11-24 01:16:58,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1283, PETRI_PLACES=147, PETRI_TRANSITIONS=151}
[2024-11-24 01:16:58,566 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 87 predicate places.
[2024-11-24 01:16:58,566 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 151 transitions, 1283 flow
[2024-11-24 01:16:58,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:16:58,566 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:16:58,566 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:58,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2024-11-24 01:16:58,566 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] ===
[2024-11-24 01:16:58,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:16:58,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1208996302, now seen corresponding path program 4 times
[2024-11-24 01:16:58,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:16:58,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156791931]
[2024-11-24 01:16:58,568 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 01:16:58,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:16:58,603 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 01:16:58,604 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 01:16:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2024-11-24 01:16:58,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:16:58,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156791931]
[2024-11-24 01:16:58,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156791931] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:16:58,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:16:58,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-24 01:16:58,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560019555]
[2024-11-24 01:16:58,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:16:58,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 01:16:58,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:16:58,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 01:16:58,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-24 01:16:58,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 60
[2024-11-24 01:16:58,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 151 transitions, 1283 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 01:16:58,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:16:58,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 60
[2024-11-24 01:16:58,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:17:08,374 INFO L124 PetriNetUnfolderBase]: 30146/51672 cut-off events.
[2024-11-24 01:17:08,374 INFO L125 PetriNetUnfolderBase]: For 290096/296613 co-relation queries the response was YES.