./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-two-queue.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_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/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_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/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_0f422390-7482-47dc-bbd9-9e343af8f6d8/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 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 02:03:14,078 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-24 02:03:14,185 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2024-11-24 02:03:14,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 02:03:14,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 02:03:14,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 02:03:14,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 02:03:14,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 02:03:14,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 02:03:14,214 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-24 02:03:14,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 02:03:14,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 02:03:14,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 02:03:14,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-24 02:03:14,215 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-24 02:03:14,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 02:03:14,215 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-24 02:03:14,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-24 02:03:14,216 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-24 02:03:14,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-24 02:03:14,216 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-11-24 02:03:14,216 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-11-24 02:03:14,216 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-11-24 02:03:14,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 02:03:14,216 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-24 02:03:14,217 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-24 02:03:14,217 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-24 02:03:14,217 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 02:03:14,217 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-24 02:03:14,217 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 02:03:14,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 02:03:14,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 02:03:14,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 02:03:14,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 02:03:14,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 02:03:14,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 02:03:14,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 02:03:14,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 02:03:14,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 02:03:14,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 02:03:14,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 02:03:14,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-24 02:03:14,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-24 02:03:14,219 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 02:03:14,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 02:03:14,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 02:03:14,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 02:03:14,219 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_0f422390-7482-47dc-bbd9-9e343af8f6d8/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 -> 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8
[2024-11-24 02:03:14,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 02:03:14,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 02:03:14,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 02:03:14,563 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-24 02:03:14,563 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-24 02:03:14,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c
[2024-11-24 02:03:17,534 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/data/23101da5a/cc2e20ec79ad4213a8c3e2062adfda18/FLAG54ae34139
[2024-11-24 02:03:17,868 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-24 02:03:17,869 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c
[2024-11-24 02:03:17,876 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/data/23101da5a/cc2e20ec79ad4213a8c3e2062adfda18/FLAG54ae34139
[2024-11-24 02:03:18,126 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/data/23101da5a/cc2e20ec79ad4213a8c3e2062adfda18
[2024-11-24 02:03:18,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 02:03:18,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 02:03:18,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 02:03:18,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 02:03:18,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 02:03:18,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee1bce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18, skipping insertion in model container
[2024-11-24 02:03:18,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,163 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-24 02:03:18,338 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 02:03:18,343 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 02:03:18,352 INFO L200 MainTranslator]: Completed pre-run
[2024-11-24 02:03:18,374 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 02:03:18,390 INFO L204 MainTranslator]: Completed translation
[2024-11-24 02:03:18,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18 WrapperNode
[2024-11-24 02:03:18,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 02:03:18,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 02:03:18,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 02:03:18,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 02:03:18,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,439 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 196
[2024-11-24 02:03:18,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 02:03:18,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 02:03:18,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 02:03:18,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 02:03:18,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,461 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,486 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2].
[2024-11-24 02:03:18,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,500 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,505 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 02:03:18,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 02:03:18,526 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 02:03:18,526 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-24 02:03:18,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (1/1) ...
[2024-11-24 02:03:18,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 02:03:18,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:03:18,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 02:03:18,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 02:03:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-24 02:03:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2024-11-24 02:03:18,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2024-11-24 02:03:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2024-11-24 02:03:18,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2024-11-24 02:03:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-24 02:03:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-24 02:03:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-24 02:03:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-24 02:03:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2024-11-24 02:03:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2024-11-24 02:03:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-24 02:03:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 02:03:18,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 02:03:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-24 02:03:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-24 02:03:18,599 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 02:03:18,712 INFO L234 CfgBuilder]: Building ICFG
[2024-11-24 02:03:18,714 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 02:03:19,226 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-24 02:03:19,228 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-24 02:03:19,653 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 02:03:19,655 INFO L312 CfgBuilder]: Removed 4 assume(true) statements.
[2024-11-24 02:03:19,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:03:19 BoogieIcfgContainer
[2024-11-24 02:03:19,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 02:03:19,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 02:03:19,661 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 02:03:19,666 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-24 02:03:19,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:03:18" (1/3) ...
[2024-11-24 02:03:19,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6655a305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:03:19, skipping insertion in model container
[2024-11-24 02:03:19,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:03:18" (2/3) ...
[2024-11-24 02:03:19,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6655a305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:03:19, skipping insertion in model container
[2024-11-24 02:03:19,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:03:19" (3/3) ...
[2024-11-24 02:03:19,671 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c
[2024-11-24 02:03:19,690 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 02:03:19,692 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-two-queue.wvr.c that has 3 procedures, 41 locations, 1 initial locations, 4 loop locations, and 14 error locations.
[2024-11-24 02:03:19,692 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-24 02:03:19,765 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-11-24 02:03:19,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 102 flow
[2024-11-24 02:03:19,861 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events.
[2024-11-24 02:03:19,866 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-24 02:03:19,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 4/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place.
[2024-11-24 02:03:19,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 102 flow
[2024-11-24 02:03:19,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 41 transitions, 94 flow
[2024-11-24 02:03:19,888 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 02:03:19,909 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;@39043fc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 02:03:19,910 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations.
[2024-11-24 02:03:19,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-24 02:03:19,917 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events.
[2024-11-24 02:03:19,917 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-24 02:03:19,917 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:19,918 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2024-11-24 02:03:19,918 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:19,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash 635538, now seen corresponding path program 1 times
[2024-11-24 02:03:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:19,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604408734]
[2024-11-24 02:03:19,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:19,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:20,267 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 02:03:20,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:20,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604408734]
[2024-11-24 02:03:20,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604408734] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:20,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:03:20,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-11-24 02:03:20,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146338060]
[2024-11-24 02:03:20,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:20,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-24 02:03:20,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:20,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-24 02:03:20,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 02:03:20,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:03:20,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 02:03:20,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:20,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:03:20,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:20,603 INFO L124 PetriNetUnfolderBase]: 359/589 cut-off events.
[2024-11-24 02:03:20,603 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES.
[2024-11-24 02:03:20,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 589 events. 359/589 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2752 event pairs, 219 based on Foata normal form. 1/352 useless extension candidates. Maximal degree in co-relation 1090. Up to 544 conditions per place.
[2024-11-24 02:03:20,619 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 28 selfloop transitions, 2 changer transitions 0/37 dead transitions.
[2024-11-24 02:03:20,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 146 flow
[2024-11-24 02:03:20,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 02:03:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-24 02:03:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions.
[2024-11-24 02:03:20,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273
[2024-11-24 02:03:20,637 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 94 flow. Second operand 3 states and 63 transitions.
[2024-11-24 02:03:20,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 146 flow
[2024-11-24 02:03:20,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 138 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-11-24 02:03:20,646 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 82 flow
[2024-11-24 02:03:20,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=38, PETRI_TRANSITIONS=37}
[2024-11-24 02:03:20,655 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -6 predicate places.
[2024-11-24 02:03:20,655 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 82 flow
[2024-11-24 02:03:20,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 02:03:20,656 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:20,656 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2024-11-24 02:03:20,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-24 02:03:20,657 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:20,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash 635539, now seen corresponding path program 1 times
[2024-11-24 02:03:20,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:20,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91215296]
[2024-11-24 02:03:20,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:20,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:21,126 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 02:03:21,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91215296]
[2024-11-24 02:03:21,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91215296] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:21,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:03:21,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 02:03:21,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761890552]
[2024-11-24 02:03:21,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:21,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 02:03:21,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:21,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 02:03:21,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 02:03:21,150 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:03:21,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 02:03:21,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:21,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:03:21,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:21,451 INFO L124 PetriNetUnfolderBase]: 360/592 cut-off events.
[2024-11-24 02:03:21,451 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES.
[2024-11-24 02:03:21,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 592 events. 360/592 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2772 event pairs, 219 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 1132. Up to 553 conditions per place.
[2024-11-24 02:03:21,460 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 31 selfloop transitions, 4 changer transitions 0/40 dead transitions.
[2024-11-24 02:03:21,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 158 flow
[2024-11-24 02:03:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-24 02:03:21,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-24 02:03:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions.
[2024-11-24 02:03:21,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818
[2024-11-24 02:03:21,463 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 82 flow. Second operand 4 states and 76 transitions.
[2024-11-24 02:03:21,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 158 flow
[2024-11-24 02:03:21,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-24 02:03:21,465 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 105 flow
[2024-11-24 02:03:21,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=41, PETRI_TRANSITIONS=40}
[2024-11-24 02:03:21,466 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places.
[2024-11-24 02:03:21,467 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 105 flow
[2024-11-24 02:03:21,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 02:03:21,467 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:21,467 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2024-11-24 02:03:21,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-24 02:03:21,467 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:21,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash 19703620, now seen corresponding path program 1 times
[2024-11-24 02:03:21,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:21,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254429993]
[2024-11-24 02:03:21,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:21,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:21,830 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 02:03:21,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:21,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254429993]
[2024-11-24 02:03:21,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254429993] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:21,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:03:21,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-24 02:03:21,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6270225]
[2024-11-24 02:03:21,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:21,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 02:03:21,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:21,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 02:03:21,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-24 02:03:21,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:03:21,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 02:03:21,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:21,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:03:21,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:22,115 INFO L124 PetriNetUnfolderBase]: 361/595 cut-off events.
[2024-11-24 02:03:22,115 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES.
[2024-11-24 02:03:22,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 595 events. 361/595 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2789 event pairs, 219 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 1153. Up to 552 conditions per place.
[2024-11-24 02:03:22,121 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 31 selfloop transitions, 7 changer transitions 0/43 dead transitions.
[2024-11-24 02:03:22,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 187 flow
[2024-11-24 02:03:22,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 02:03:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-24 02:03:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions.
[2024-11-24 02:03:22,125 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40454545454545454
[2024-11-24 02:03:22,125 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 105 flow. Second operand 5 states and 89 transitions.
[2024-11-24 02:03:22,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 187 flow
[2024-11-24 02:03:22,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-24 02:03:22,128 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 139 flow
[2024-11-24 02:03:22,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=43}
[2024-11-24 02:03:22,130 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places.
[2024-11-24 02:03:22,130 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 139 flow
[2024-11-24 02:03:22,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 02:03:22,130 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:22,130 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1]
[2024-11-24 02:03:22,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-24 02:03:22,131 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:22,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:22,132 INFO L85 PathProgramCache]: Analyzing trace with hash 610772517, now seen corresponding path program 1 times
[2024-11-24 02:03:22,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:22,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649888115]
[2024-11-24 02:03:22,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:22,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:22,523 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 02:03:22,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:22,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649888115]
[2024-11-24 02:03:22,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649888115] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:03:22,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282004608]
[2024-11-24 02:03:22,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:22,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:03:22,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:03:22,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:03:22,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-24 02:03:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:22,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-24 02:03:22,621 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:03:22,733 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 10 treesize of output 9
[2024-11-24 02:03:23,006 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 02:03:23,006 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 02:03:23,152 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 02:03:23,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282004608] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 02:03:23,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 02:03:23,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9
[2024-11-24 02:03:23,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691619980]
[2024-11-24 02:03:23,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 02:03:23,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-24 02:03:23,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:23,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-24 02:03:23,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2024-11-24 02:03:23,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:03:23,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 139 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 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 02:03:23,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:23,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:03:23,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:23,632 INFO L124 PetriNetUnfolderBase]: 361/594 cut-off events.
[2024-11-24 02:03:23,632 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES.
[2024-11-24 02:03:23,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 594 events. 361/594 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2804 event pairs, 219 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 1163. Up to 552 conditions per place.
[2024-11-24 02:03:23,636 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 30 selfloop transitions, 7 changer transitions 0/42 dead transitions.
[2024-11-24 02:03:23,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 209 flow
[2024-11-24 02:03:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 02:03:23,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 02:03:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions.
[2024-11-24 02:03:23,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486
[2024-11-24 02:03:23,638 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 139 flow. Second operand 6 states and 95 transitions.
[2024-11-24 02:03:23,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 209 flow
[2024-11-24 02:03:23,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-24 02:03:23,640 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 148 flow
[2024-11-24 02:03:23,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=49, PETRI_TRANSITIONS=42}
[2024-11-24 02:03:23,641 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places.
[2024-11-24 02:03:23,641 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 148 flow
[2024-11-24 02:03:23,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 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 02:03:23,642 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:23,642 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1]
[2024-11-24 02:03:23,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-24 02:03:23,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:03:23,847 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:23,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:23,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1755330054, now seen corresponding path program 1 times
[2024-11-24 02:03:23,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:23,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118373230]
[2024-11-24 02:03:23,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:23,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:24,203 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 02:03:24,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:24,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118373230]
[2024-11-24 02:03:24,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118373230] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:03:24,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17529556]
[2024-11-24 02:03:24,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:24,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:03:24,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:03:24,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:03:24,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-24 02:03:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:24,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-24 02:03:24,300 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:03:24,329 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 10 treesize of output 9
[2024-11-24 02:03:24,568 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 02:03:24,568 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 02:03:24,791 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 02:03:24,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17529556] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 02:03:24,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 02:03:24,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11
[2024-11-24 02:03:24,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761033985]
[2024-11-24 02:03:24,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 02:03:24,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-24 02:03:24,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:24,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-24 02:03:24,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2024-11-24 02:03:24,976 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:03:24,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 148 flow. Second operand has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 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 02:03:24,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:24,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:03:24,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:25,529 INFO L124 PetriNetUnfolderBase]: 363/599 cut-off events.
[2024-11-24 02:03:25,529 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES.
[2024-11-24 02:03:25,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 599 events. 363/599 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2825 event pairs, 219 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 1171. Up to 545 conditions per place.
[2024-11-24 02:03:25,534 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 24 selfloop transitions, 18 changer transitions 0/47 dead transitions.
[2024-11-24 02:03:25,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 261 flow
[2024-11-24 02:03:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-24 02:03:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2024-11-24 02:03:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions.
[2024-11-24 02:03:25,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384
[2024-11-24 02:03:25,537 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 148 flow. Second operand 9 states and 134 transitions.
[2024-11-24 02:03:25,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 261 flow
[2024-11-24 02:03:25,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 214 flow, removed 6 selfloop flow, removed 8 redundant places.
[2024-11-24 02:03:25,541 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 166 flow
[2024-11-24 02:03:25,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=48, PETRI_TRANSITIONS=47}
[2024-11-24 02:03:25,544 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places.
[2024-11-24 02:03:25,545 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 166 flow
[2024-11-24 02:03:25,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 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 02:03:25,545 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:25,545 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:03:25,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-24 02:03:25,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:03:25,750 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:25,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1416775571, now seen corresponding path program 1 times
[2024-11-24 02:03:25,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:25,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437327128]
[2024-11-24 02:03:25,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:25,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:25,825 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 02:03:25,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:25,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437327128]
[2024-11-24 02:03:25,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437327128] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:25,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:03:25,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-24 02:03:25,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408960570]
[2024-11-24 02:03:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:25,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 02:03:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:25,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 02:03:25,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 02:03:25,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44
[2024-11-24 02:03:25,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 02:03:25,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:25,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44
[2024-11-24 02:03:25,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:26,012 INFO L124 PetriNetUnfolderBase]: 385/660 cut-off events.
[2024-11-24 02:03:26,013 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES.
[2024-11-24 02:03:26,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 660 events. 385/660 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3300 event pairs, 242 based on Foata normal form. 16/432 useless extension candidates. Maximal degree in co-relation 1140. Up to 557 conditions per place.
[2024-11-24 02:03:26,018 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 48 selfloop transitions, 5 changer transitions 1/59 dead transitions.
[2024-11-24 02:03:26,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 302 flow
[2024-11-24 02:03:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-24 02:03:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-24 02:03:26,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions.
[2024-11-24 02:03:26,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625
[2024-11-24 02:03:26,022 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 166 flow. Second operand 4 states and 99 transitions.
[2024-11-24 02:03:26,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 302 flow
[2024-11-24 02:03:26,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 269 flow, removed 6 selfloop flow, removed 5 redundant places.
[2024-11-24 02:03:26,024 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 156 flow
[2024-11-24 02:03:26,024 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=47, PETRI_TRANSITIONS=47}
[2024-11-24 02:03:26,027 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places.
[2024-11-24 02:03:26,027 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 156 flow
[2024-11-24 02:03:26,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 02:03:26,027 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:26,027 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:03:26,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-24 02:03:26,028 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:26,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:26,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1814010475, now seen corresponding path program 1 times
[2024-11-24 02:03:26,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:26,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054914304]
[2024-11-24 02:03:26,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:26,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:03:26,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054914304]
[2024-11-24 02:03:26,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054914304] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:03:26,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709429845]
[2024-11-24 02:03:26,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:26,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:03:26,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:03:26,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:03:26,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-24 02:03:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:26,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-24 02:03:26,348 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:03:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:03:26,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 02:03:26,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709429845] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:26,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 02:03:26,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7
[2024-11-24 02:03:26,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215602504]
[2024-11-24 02:03:26,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:26,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 02:03:26,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:26,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 02:03:26,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-24 02:03:26,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44
[2024-11-24 02:03:26,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 02:03:26,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:26,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44
[2024-11-24 02:03:26,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:26,609 INFO L124 PetriNetUnfolderBase]: 307/543 cut-off events.
[2024-11-24 02:03:26,609 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES.
[2024-11-24 02:03:26,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 543 events. 307/543 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2577 event pairs, 194 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 1020. Up to 485 conditions per place.
[2024-11-24 02:03:26,612 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 34 selfloop transitions, 6 changer transitions 0/45 dead transitions.
[2024-11-24 02:03:26,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 228 flow
[2024-11-24 02:03:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-24 02:03:26,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-24 02:03:26,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions.
[2024-11-24 02:03:26,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182
[2024-11-24 02:03:26,614 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 156 flow. Second operand 4 states and 78 transitions.
[2024-11-24 02:03:26,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 228 flow
[2024-11-24 02:03:26,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-24 02:03:26,616 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 156 flow
[2024-11-24 02:03:26,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=47, PETRI_TRANSITIONS=45}
[2024-11-24 02:03:26,617 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places.
[2024-11-24 02:03:26,617 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 156 flow
[2024-11-24 02:03:26,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 02:03:26,617 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:26,617 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:03:26,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-24 02:03:26,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:03:26,821 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:26,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash -28939054, now seen corresponding path program 1 times
[2024-11-24 02:03:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:26,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674264230]
[2024-11-24 02:03:26,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:26,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 02:03:26,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:26,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674264230]
[2024-11-24 02:03:26,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674264230] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:26,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:03:26,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 02:03:26,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231329018]
[2024-11-24 02:03:26,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:26,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 02:03:26,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:26,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 02:03:26,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 02:03:26,930 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44
[2024-11-24 02:03:26,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 02:03:26,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:26,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44
[2024-11-24 02:03:26,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:27,130 INFO L124 PetriNetUnfolderBase]: 336/642 cut-off events.
[2024-11-24 02:03:27,130 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES.
[2024-11-24 02:03:27,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 642 events. 336/642 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3391 event pairs, 222 based on Foata normal form. 12/476 useless extension candidates. Maximal degree in co-relation 1002. Up to 499 conditions per place.
[2024-11-24 02:03:27,151 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 54 selfloop transitions, 5 changer transitions 1/65 dead transitions.
[2024-11-24 02:03:27,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 352 flow
[2024-11-24 02:03:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 02:03:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-24 02:03:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions.
[2024-11-24 02:03:27,154 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182
[2024-11-24 02:03:27,154 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 156 flow. Second operand 5 states and 114 transitions.
[2024-11-24 02:03:27,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 352 flow
[2024-11-24 02:03:27,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-24 02:03:27,159 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 191 flow
[2024-11-24 02:03:27,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=51, PETRI_TRANSITIONS=47}
[2024-11-24 02:03:27,160 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places.
[2024-11-24 02:03:27,160 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 191 flow
[2024-11-24 02:03:27,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 02:03:27,163 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:27,163 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:03:27,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-24 02:03:27,163 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:27,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:27,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1814010474, now seen corresponding path program 1 times
[2024-11-24 02:03:27,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:27,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689681237]
[2024-11-24 02:03:27,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:27,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:03:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689681237]
[2024-11-24 02:03:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689681237] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:27,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:03:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-24 02:03:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904808839]
[2024-11-24 02:03:27,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:27,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 02:03:27,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:27,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 02:03:27,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 02:03:27,247 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:03:27,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 02:03:27,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:27,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:03:27,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:27,379 INFO L124 PetriNetUnfolderBase]: 262/525 cut-off events.
[2024-11-24 02:03:27,379 INFO L125 PetriNetUnfolderBase]: For 97/145 co-relation queries the response was YES.
[2024-11-24 02:03:27,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1258 conditions, 525 events. 262/525 cut-off events. For 97/145 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2681 event pairs, 174 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 1053. Up to 448 conditions per place.
[2024-11-24 02:03:27,383 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 35 selfloop transitions, 5 changer transitions 0/45 dead transitions.
[2024-11-24 02:03:27,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 263 flow
[2024-11-24 02:03:27,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-24 02:03:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-24 02:03:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions.
[2024-11-24 02:03:27,384 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635
[2024-11-24 02:03:27,385 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 191 flow. Second operand 4 states and 68 transitions.
[2024-11-24 02:03:27,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 263 flow
[2024-11-24 02:03:27,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-24 02:03:27,389 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 188 flow
[2024-11-24 02:03:27,389 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=50, PETRI_TRANSITIONS=45}
[2024-11-24 02:03:27,390 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places.
[2024-11-24 02:03:27,391 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 188 flow
[2024-11-24 02:03:27,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 02:03:27,391 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:27,391 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:03:27,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-24 02:03:27,391 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:27,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:27,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1584392932, now seen corresponding path program 1 times
[2024-11-24 02:03:27,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:27,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59809241]
[2024-11-24 02:03:27,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:27,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:03:27,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59809241]
[2024-11-24 02:03:27,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59809241] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:03:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929062077]
[2024-11-24 02:03:27,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:27,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:03:27,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:03:27,678 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:03:27,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-24 02:03:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:27,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-24 02:03:27,764 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:03:27,776 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 02:03:27,855 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-24 02:03:27,857 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 18 treesize of output 13
[2024-11-24 02:03:27,876 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 02:03:27,876 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 02:03:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:03:27,927 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 02:03:27,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929062077] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:27,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 02:03:27,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6
[2024-11-24 02:03:27,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487160150]
[2024-11-24 02:03:27,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:27,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 02:03:27,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:27,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 02:03:27,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-24 02:03:27,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:03:27,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 02:03:27,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:27,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:03:27,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:28,085 INFO L124 PetriNetUnfolderBase]: 198/423 cut-off events.
[2024-11-24 02:03:28,085 INFO L125 PetriNetUnfolderBase]: For 91/115 co-relation queries the response was YES.
[2024-11-24 02:03:28,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 423 events. 198/423 cut-off events. For 91/115 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2075 event pairs, 132 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 648. Up to 365 conditions per place.
[2024-11-24 02:03:28,087 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 34 selfloop transitions, 4 changer transitions 0/43 dead transitions.
[2024-11-24 02:03:28,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 256 flow
[2024-11-24 02:03:28,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-24 02:03:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-24 02:03:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions.
[2024-11-24 02:03:28,089 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375
[2024-11-24 02:03:28,089 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 188 flow. Second operand 4 states and 66 transitions.
[2024-11-24 02:03:28,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 256 flow
[2024-11-24 02:03:28,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-24 02:03:28,091 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 182 flow
[2024-11-24 02:03:28,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=49, PETRI_TRANSITIONS=43}
[2024-11-24 02:03:28,091 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places.
[2024-11-24 02:03:28,091 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 182 flow
[2024-11-24 02:03:28,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 02:03:28,092 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:28,092 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:03:28,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-24 02:03:28,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:03:28,297 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:28,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:28,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1584392931, now seen corresponding path program 1 times
[2024-11-24 02:03:28,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:28,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598764458]
[2024-11-24 02:03:28,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:28,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:03:28,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:28,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598764458]
[2024-11-24 02:03:28,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598764458] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:28,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:03:28,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 02:03:28,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110633622]
[2024-11-24 02:03:28,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:28,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 02:03:28,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:28,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 02:03:28,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 02:03:28,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:03:28,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 02:03:28,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:28,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:03:28,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:28,514 INFO L124 PetriNetUnfolderBase]: 144/335 cut-off events.
[2024-11-24 02:03:28,514 INFO L125 PetriNetUnfolderBase]: For 75/83 co-relation queries the response was YES.
[2024-11-24 02:03:28,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 335 events. 144/335 cut-off events. For 75/83 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1604 event pairs, 96 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 544. Up to 266 conditions per place.
[2024-11-24 02:03:28,517 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 28 selfloop transitions, 8 changer transitions 0/41 dead transitions.
[2024-11-24 02:03:28,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 246 flow
[2024-11-24 02:03:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-24 02:03:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-24 02:03:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions.
[2024-11-24 02:03:28,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636
[2024-11-24 02:03:28,518 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 182 flow. Second operand 5 states and 74 transitions.
[2024-11-24 02:03:28,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 246 flow
[2024-11-24 02:03:28,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-24 02:03:28,522 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 185 flow
[2024-11-24 02:03:28,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=49, PETRI_TRANSITIONS=41}
[2024-11-24 02:03:28,523 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places.
[2024-11-24 02:03:28,523 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 185 flow
[2024-11-24 02:03:28,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 02:03:28,523 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:28,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:03:28,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-11-24 02:03:28,523 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:28,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:28,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1006072961, now seen corresponding path program 1 times
[2024-11-24 02:03:28,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:28,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001302560]
[2024-11-24 02:03:28,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:28,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 02:03:28,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:28,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001302560]
[2024-11-24 02:03:28,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001302560] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:28,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:03:28,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 02:03:28,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104945099]
[2024-11-24 02:03:28,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:28,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-24 02:03:28,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:28,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-24 02:03:28,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 02:03:28,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44
[2024-11-24 02:03:28,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 02:03:28,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:28,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44
[2024-11-24 02:03:28,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:28,708 INFO L124 PetriNetUnfolderBase]: 180/397 cut-off events.
[2024-11-24 02:03:28,709 INFO L125 PetriNetUnfolderBase]: For 93/101 co-relation queries the response was YES.
[2024-11-24 02:03:28,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 397 events. 180/397 cut-off events. For 93/101 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1909 event pairs, 61 based on Foata normal form. 4/381 useless extension candidates. Maximal degree in co-relation 708. Up to 181 conditions per place.
[2024-11-24 02:03:28,711 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 39 selfloop transitions, 3 changer transitions 5/52 dead transitions.
[2024-11-24 02:03:28,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 312 flow
[2024-11-24 02:03:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 02:03:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-24 02:03:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions.
[2024-11-24 02:03:28,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303
[2024-11-24 02:03:28,712 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 185 flow. Second operand 3 states and 70 transitions.
[2024-11-24 02:03:28,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 312 flow
[2024-11-24 02:03:28,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 300 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-24 02:03:28,714 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 155 flow
[2024-11-24 02:03:28,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=49, PETRI_TRANSITIONS=39}
[2024-11-24 02:03:28,715 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places.
[2024-11-24 02:03:28,715 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 155 flow
[2024-11-24 02:03:28,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 02:03:28,715 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:28,715 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:03:28,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-11-24 02:03:28,716 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:28,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1480679834, now seen corresponding path program 1 times
[2024-11-24 02:03:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:28,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182073548]
[2024-11-24 02:03:28,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-24 02:03:28,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:28,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182073548]
[2024-11-24 02:03:28,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182073548] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:28,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:03:28,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 02:03:28,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931707456]
[2024-11-24 02:03:28,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:28,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-24 02:03:28,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:28,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-24 02:03:28,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 02:03:28,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44
[2024-11-24 02:03:28,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 02:03:28,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:28,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44
[2024-11-24 02:03:28,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:28,863 INFO L124 PetriNetUnfolderBase]: 107/218 cut-off events.
[2024-11-24 02:03:28,863 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES.
[2024-11-24 02:03:28,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 218 events. 107/218 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 749 event pairs, 22 based on Foata normal form. 6/212 useless extension candidates. Maximal degree in co-relation 521. Up to 143 conditions per place.
[2024-11-24 02:03:28,865 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 37 selfloop transitions, 2 changer transitions 2/46 dead transitions.
[2024-11-24 02:03:28,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 257 flow
[2024-11-24 02:03:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 02:03:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-24 02:03:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions.
[2024-11-24 02:03:28,866 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5
[2024-11-24 02:03:28,866 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 155 flow. Second operand 3 states and 66 transitions.
[2024-11-24 02:03:28,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 257 flow
[2024-11-24 02:03:28,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 252 flow, removed 1 selfloop flow, removed 2 redundant places.
[2024-11-24 02:03:28,868 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 164 flow
[2024-11-24 02:03:28,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=47, PETRI_TRANSITIONS=40}
[2024-11-24 02:03:28,869 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places.
[2024-11-24 02:03:28,869 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 164 flow
[2024-11-24 02:03:28,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 02:03:28,869 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:28,869 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:03:28,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2024-11-24 02:03:28,869 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:28,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:28,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1850092364, now seen corresponding path program 1 times
[2024-11-24 02:03:28,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:28,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744666928]
[2024-11-24 02:03:28,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:28,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-24 02:03:28,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:28,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744666928]
[2024-11-24 02:03:28,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744666928] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:03:28,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:03:28,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-24 02:03:28,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208495650]
[2024-11-24 02:03:28,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:03:28,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-24 02:03:28,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:28,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-24 02:03:28,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-24 02:03:28,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44
[2024-11-24 02:03:28,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 02:03:28,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:28,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44
[2024-11-24 02:03:28,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:03:29,010 INFO L124 PetriNetUnfolderBase]: 82/178 cut-off events.
[2024-11-24 02:03:29,010 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES.
[2024-11-24 02:03:29,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 178 events. 82/178 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 520 event pairs, 28 based on Foata normal form. 5/173 useless extension candidates. Maximal degree in co-relation 439. Up to 112 conditions per place.
[2024-11-24 02:03:29,012 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 38 selfloop transitions, 2 changer transitions 4/49 dead transitions.
[2024-11-24 02:03:29,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 280 flow
[2024-11-24 02:03:29,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-24 02:03:29,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-24 02:03:29,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions.
[2024-11-24 02:03:29,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151
[2024-11-24 02:03:29,013 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 164 flow. Second operand 3 states and 68 transitions.
[2024-11-24 02:03:29,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 280 flow
[2024-11-24 02:03:29,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 273 flow, removed 2 selfloop flow, removed 1 redundant places.
[2024-11-24 02:03:29,015 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 174 flow
[2024-11-24 02:03:29,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=49, PETRI_TRANSITIONS=41}
[2024-11-24 02:03:29,016 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places.
[2024-11-24 02:03:29,016 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 174 flow
[2024-11-24 02:03:29,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 02:03:29,016 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:03:29,017 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:03:29,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2024-11-24 02:03:29,017 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:03:29,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:03:29,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2063150415, now seen corresponding path program 1 times
[2024-11-24 02:03:29,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:03:29,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335648982]
[2024-11-24 02:03:29,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:29,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:03:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:03:30,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:03:30,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335648982]
[2024-11-24 02:03:30,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335648982] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:03:30,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89239107]
[2024-11-24 02:03:30,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:03:30,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:03:30,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:03:30,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:03:30,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-24 02:03:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:03:30,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 52 conjuncts are in the unsatisfiable core
[2024-11-24 02:03:30,827 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:03:30,863 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 02:03:30,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-24 02:03:31,037 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 02:03:31,037 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 02:03:31,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-24 02:03:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:03:32,073 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 02:03:38,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:03:38,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 192
[2024-11-24 02:03:38,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 210
[2024-11-24 02:03:38,962 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:03:38,963 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 154 treesize of output 144
[2024-11-24 02:03:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:03:39,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89239107] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 02:03:39,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 02:03:39,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 40
[2024-11-24 02:03:39,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434503800]
[2024-11-24 02:03:39,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 02:03:39,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states
[2024-11-24 02:03:39,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:03:39,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2024-11-24 02:03:39,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1413, Unknown=1, NotChecked=0, Total=1640
[2024-11-24 02:03:44,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:03:48,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:03:52,959 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 02:03:53,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 44
[2024-11-24 02:03:53,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 174 flow. Second operand has 41 states, 41 states have (on average 6.682926829268292) internal successors, (274), 41 states have internal predecessors, (274), 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 02:03:53,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:03:53,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 44
[2024-11-24 02:03:53,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:04:31,176 INFO L124 PetriNetUnfolderBase]: 1102/2066 cut-off events.
[2024-11-24 02:04:31,176 INFO L125 PetriNetUnfolderBase]: For 1128/1128 co-relation queries the response was YES.
[2024-11-24 02:04:31,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5530 conditions, 2066 events. 1102/2066 cut-off events. For 1128/1128 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11152 event pairs, 44 based on Foata normal form. 7/1787 useless extension candidates. Maximal degree in co-relation 5301. Up to 379 conditions per place.
[2024-11-24 02:04:31,190 INFO L140 encePairwiseOnDemand]: 26/44 looper letters, 316 selfloop transitions, 326 changer transitions 28/673 dead transitions.
[2024-11-24 02:04:31,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 673 transitions, 3620 flow
[2024-11-24 02:04:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states.
[2024-11-24 02:04:31,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states.
[2024-11-24 02:04:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 1364 transitions.
[2024-11-24 02:04:31,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.22794117647058823
[2024-11-24 02:04:31,198 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 174 flow. Second operand 136 states and 1364 transitions.
[2024-11-24 02:04:31,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 673 transitions, 3620 flow
[2024-11-24 02:04:31,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 673 transitions, 3599 flow, removed 8 selfloop flow, removed 1 redundant places.
[2024-11-24 02:04:31,211 INFO L231 Difference]: Finished difference. Result has 234 places, 400 transitions, 2714 flow
[2024-11-24 02:04:31,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=136, PETRI_FLOW=2714, PETRI_PLACES=234, PETRI_TRANSITIONS=400}
[2024-11-24 02:04:31,212 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places.
[2024-11-24 02:04:31,212 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 400 transitions, 2714 flow
[2024-11-24 02:04:31,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.682926829268292) internal successors, (274), 41 states have internal predecessors, (274), 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 02:04:31,213 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:04:31,213 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:04:31,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-24 02:04:31,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:04:31,417 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:04:31,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:04:31,418 INFO L85 PathProgramCache]: Analyzing trace with hash -306836741, now seen corresponding path program 2 times
[2024-11-24 02:04:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:04:31,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137137893]
[2024-11-24 02:04:31,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 02:04:31,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:04:31,495 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 02:04:31,495 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:04:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:04:33,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:04:33,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137137893]
[2024-11-24 02:04:33,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137137893] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:04:33,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37844444]
[2024-11-24 02:04:33,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 02:04:33,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:04:33,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:04:33,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:04:33,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-24 02:04:33,525 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 02:04:33,525 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:04:33,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 39 conjuncts are in the unsatisfiable core
[2024-11-24 02:04:33,535 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:04:33,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-24 02:04:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:04:34,364 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 02:04:35,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:04:35,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 145
[2024-11-24 02:04:35,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:04:35,104 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 33 treesize of output 29
[2024-11-24 02:04:35,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:04:35,269 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 51 treesize of output 47
[2024-11-24 02:04:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:04:35,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37844444] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 02:04:35,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 02:04:35,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32
[2024-11-24 02:04:35,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124696235]
[2024-11-24 02:04:35,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 02:04:35,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2024-11-24 02:04:35,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:04:35,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2024-11-24 02:04:35,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056
[2024-11-24 02:04:36,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:04:36,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 400 transitions, 2714 flow. Second operand has 33 states, 33 states have (on average 12.090909090909092) internal successors, (399), 33 states have internal predecessors, (399), 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 02:04:36,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:04:36,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:04:36,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:04:41,975 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 02:04:46,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:04:50,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:04:54,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:04:58,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:05:00,082 INFO L124 PetriNetUnfolderBase]: 1293/2401 cut-off events.
[2024-11-24 02:05:00,082 INFO L125 PetriNetUnfolderBase]: For 64648/64648 co-relation queries the response was YES.
[2024-11-24 02:05:00,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13920 conditions, 2401 events. 1293/2401 cut-off events. For 64648/64648 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13406 event pairs, 100 based on Foata normal form. 3/2335 useless extension candidates. Maximal degree in co-relation 13717. Up to 1246 conditions per place.
[2024-11-24 02:05:00,115 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 335 selfloop transitions, 195 changer transitions 11/544 dead transitions.
[2024-11-24 02:05:00,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 544 transitions, 4876 flow
[2024-11-24 02:05:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2024-11-24 02:05:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2024-11-24 02:05:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 453 transitions.
[2024-11-24 02:05:00,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3550156739811912
[2024-11-24 02:05:00,118 INFO L175 Difference]: Start difference. First operand has 234 places, 400 transitions, 2714 flow. Second operand 29 states and 453 transitions.
[2024-11-24 02:05:00,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 544 transitions, 4876 flow
[2024-11-24 02:05:00,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 544 transitions, 4178 flow, removed 343 selfloop flow, removed 6 redundant places.
[2024-11-24 02:05:00,309 INFO L231 Difference]: Finished difference. Result has 259 places, 458 transitions, 2987 flow
[2024-11-24 02:05:00,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2987, PETRI_PLACES=259, PETRI_TRANSITIONS=458}
[2024-11-24 02:05:00,310 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 215 predicate places.
[2024-11-24 02:05:00,310 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 458 transitions, 2987 flow
[2024-11-24 02:05:00,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 12.090909090909092) internal successors, (399), 33 states have internal predecessors, (399), 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 02:05:00,310 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:05:00,310 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:05:00,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-24 02:05:00,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2024-11-24 02:05:00,511 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:05:00,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:05:00,512 INFO L85 PathProgramCache]: Analyzing trace with hash -424781215, now seen corresponding path program 3 times
[2024-11-24 02:05:00,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:05:00,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851486402]
[2024-11-24 02:05:00,513 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 02:05:00,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:05:00,559 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 02:05:00,559 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:05:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:05:02,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:05:02,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851486402]
[2024-11-24 02:05:02,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851486402] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:05:02,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368759052]
[2024-11-24 02:05:02,535 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 02:05:02,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:05:02,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:05:02,537 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:05:02,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-24 02:05:02,636 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 02:05:02,636 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:05:02,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 39 conjuncts are in the unsatisfiable core
[2024-11-24 02:05:02,641 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:05:02,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-24 02:05:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:05:03,630 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 02:05:04,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:05:04,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 145
[2024-11-24 02:05:04,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:05:04,488 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 33 treesize of output 29
[2024-11-24 02:05:04,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:05:04,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 195 treesize of output 256
[2024-11-24 02:05:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:05:08,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368759052] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 02:05:08,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 02:05:08,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 33
[2024-11-24 02:05:08,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469079758]
[2024-11-24 02:05:08,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 02:05:08,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2024-11-24 02:05:08,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:05:08,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2024-11-24 02:05:08,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122
[2024-11-24 02:05:09,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:05:09,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 458 transitions, 2987 flow. Second operand has 34 states, 34 states have (on average 12.029411764705882) internal successors, (409), 34 states have internal predecessors, (409), 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 02:05:09,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:05:09,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:05:09,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:05:14,216 INFO L124 PetriNetUnfolderBase]: 1669/3065 cut-off events.
[2024-11-24 02:05:14,216 INFO L125 PetriNetUnfolderBase]: For 84028/84028 co-relation queries the response was YES.
[2024-11-24 02:05:14,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17681 conditions, 3065 events. 1669/3065 cut-off events. For 84028/84028 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18330 event pairs, 168 based on Foata normal form. 6/2971 useless extension candidates. Maximal degree in co-relation 17378. Up to 1440 conditions per place.
[2024-11-24 02:05:14,264 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 392 selfloop transitions, 260 changer transitions 10/665 dead transitions.
[2024-11-24 02:05:14,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 665 transitions, 5961 flow
[2024-11-24 02:05:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2024-11-24 02:05:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2024-11-24 02:05:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 549 transitions.
[2024-11-24 02:05:14,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3564935064935065
[2024-11-24 02:05:14,267 INFO L175 Difference]: Start difference. First operand has 259 places, 458 transitions, 2987 flow. Second operand 35 states and 549 transitions.
[2024-11-24 02:05:14,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 665 transitions, 5961 flow
[2024-11-24 02:05:14,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 665 transitions, 5811 flow, removed 37 selfloop flow, removed 16 redundant places.
[2024-11-24 02:05:14,501 INFO L231 Difference]: Finished difference. Result has 286 places, 544 transitions, 4181 flow
[2024-11-24 02:05:14,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4181, PETRI_PLACES=286, PETRI_TRANSITIONS=544}
[2024-11-24 02:05:14,502 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 242 predicate places.
[2024-11-24 02:05:14,502 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 544 transitions, 4181 flow
[2024-11-24 02:05:14,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 12.029411764705882) internal successors, (409), 34 states have internal predecessors, (409), 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 02:05:14,503 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:05:14,503 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:05:14,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-24 02:05:14,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-11-24 02:05:14,704 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:05:14,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:05:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash 758609825, now seen corresponding path program 4 times
[2024-11-24 02:05:14,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:05:14,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78249927]
[2024-11-24 02:05:14,705 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 02:05:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:05:14,741 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 02:05:14,742 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:05:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:05:15,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:05:15,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78249927]
[2024-11-24 02:05:15,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78249927] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:05:15,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135853975]
[2024-11-24 02:05:15,904 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 02:05:15,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:05:15,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:05:15,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:05:15,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-24 02:05:16,047 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 02:05:16,047 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:05:16,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 50 conjuncts are in the unsatisfiable core
[2024-11-24 02:05:16,054 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:05:16,066 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 02:05:16,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-24 02:05:16,369 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 02:05:16,369 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 02:05:16,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-24 02:05:17,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18
[2024-11-24 02:05:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:05:17,717 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 02:05:27,552 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-24 02:05:27,859 INFO L349 Elim1Store]: treesize reduction 32, result has 63.2 percent of original size
[2024-11-24 02:05:27,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 131 treesize of output 137
[2024-11-24 02:05:27,882 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-24 02:05:27,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 117
[2024-11-24 02:05:27,906 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 66 treesize of output 54
[2024-11-24 02:05:28,078 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2024-11-24 02:05:28,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 82
[2024-11-24 02:05:29,376 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-24 02:05:29,670 INFO L349 Elim1Store]: treesize reduction 32, result has 63.2 percent of original size
[2024-11-24 02:05:29,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 82 treesize of output 108
[2024-11-24 02:05:29,701 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-24 02:05:29,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 88
[2024-11-24 02:05:29,723 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 20 treesize of output 14
[2024-11-24 02:05:29,966 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2024-11-24 02:05:29,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 62
[2024-11-24 02:05:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:05:31,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135853975] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 02:05:31,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 02:05:31,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 35
[2024-11-24 02:05:31,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969425240]
[2024-11-24 02:05:31,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 02:05:31,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2024-11-24 02:05:31,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:05:31,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2024-11-24 02:05:31,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1131, Unknown=1, NotChecked=0, Total=1260
[2024-11-24 02:05:34,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:05:39,147 WARN L539 Checker$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 02:05:43,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:05:43,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 44
[2024-11-24 02:05:43,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 544 transitions, 4181 flow. Second operand has 36 states, 36 states have (on average 6.861111111111111) internal successors, (247), 36 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-24 02:05:43,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:05:43,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 44
[2024-11-24 02:05:43,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:05:50,610 WARN L539 Checker$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 02:05:59,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:06:03,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:06:07,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:06:11,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:06:15,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:06:16,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:07:06,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:07:12,807 WARN L539 Checker$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 02:07:16,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:07:27,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:07:31,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:07:33,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:07:54,654 INFO L124 PetriNetUnfolderBase]: 2103/3851 cut-off events.
[2024-11-24 02:07:54,654 INFO L125 PetriNetUnfolderBase]: For 106125/106125 co-relation queries the response was YES.
[2024-11-24 02:07:54,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23511 conditions, 3851 events. 2103/3851 cut-off events. For 106125/106125 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 24100 event pairs, 137 based on Foata normal form. 15/3796 useless extension candidates. Maximal degree in co-relation 23165. Up to 1388 conditions per place.
[2024-11-24 02:07:54,685 INFO L140 encePairwiseOnDemand]: 26/44 looper letters, 312 selfloop transitions, 504 changer transitions 11/830 dead transitions.
[2024-11-24 02:07:54,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 830 transitions, 8276 flow
[2024-11-24 02:07:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2024-11-24 02:07:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2024-11-24 02:07:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 548 transitions.
[2024-11-24 02:07:54,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.23499142367066894
[2024-11-24 02:07:54,688 INFO L175 Difference]: Start difference. First operand has 286 places, 544 transitions, 4181 flow. Second operand 53 states and 548 transitions.
[2024-11-24 02:07:54,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 830 transitions, 8276 flow
[2024-11-24 02:07:54,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 830 transitions, 8142 flow, removed 27 selfloop flow, removed 17 redundant places.
[2024-11-24 02:07:54,999 INFO L231 Difference]: Finished difference. Result has 336 places, 696 transitions, 7312 flow
[2024-11-24 02:07:54,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4071, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=356, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=7312, PETRI_PLACES=336, PETRI_TRANSITIONS=696}
[2024-11-24 02:07:54,999 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 292 predicate places.
[2024-11-24 02:07:55,000 INFO L471 AbstractCegarLoop]: Abstraction has has 336 places, 696 transitions, 7312 flow
[2024-11-24 02:07:55,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.861111111111111) internal successors, (247), 36 states have internal predecessors, (247), 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 02:07:55,000 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:07:55,000 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:07:55,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-24 02:07:55,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-11-24 02:07:55,201 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:07:55,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:07:55,201 INFO L85 PathProgramCache]: Analyzing trace with hash 703175251, now seen corresponding path program 5 times
[2024-11-24 02:07:55,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:07:55,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096272959]
[2024-11-24 02:07:55,202 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 02:07:55,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:07:55,260 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2024-11-24 02:07:55,260 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:08:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:08:00,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:08:00,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096272959]
[2024-11-24 02:08:00,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096272959] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:08:00,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929981071]
[2024-11-24 02:08:00,011 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 02:08:00,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:08:00,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:08:00,014 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:08:00,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-24 02:08:00,103 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2024-11-24 02:08:00,103 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:08:00,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 33 conjuncts are in the unsatisfiable core
[2024-11-24 02:08:00,106 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:08:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:08:03,914 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 02:08:07,231 INFO L349 Elim1Store]: treesize reduction 22, result has 89.8 percent of original size
[2024-11-24 02:08:07,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 98 treesize of output 226
[2024-11-24 02:08:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:08:20,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929981071] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 02:08:20,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 02:08:20,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 38
[2024-11-24 02:08:20,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913986818]
[2024-11-24 02:08:20,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 02:08:20,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states
[2024-11-24 02:08:20,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:08:20,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2024-11-24 02:08:20,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482
[2024-11-24 02:08:23,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:08:23,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 696 transitions, 7312 flow. Second operand has 39 states, 39 states have (on average 11.76923076923077) internal successors, (459), 39 states have internal predecessors, (459), 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 02:08:23,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:08:23,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:08:23,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:08:56,546 INFO L124 PetriNetUnfolderBase]: 2769/5016 cut-off events.
[2024-11-24 02:08:56,546 INFO L125 PetriNetUnfolderBase]: For 192592/192592 co-relation queries the response was YES.
[2024-11-24 02:08:56,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36838 conditions, 5016 events. 2769/5016 cut-off events. For 192592/192592 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 33125 event pairs, 110 based on Foata normal form. 23/4985 useless extension candidates. Maximal degree in co-relation 36464. Up to 1589 conditions per place.
[2024-11-24 02:08:56,603 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 413 selfloop transitions, 656 changer transitions 19/1091 dead transitions.
[2024-11-24 02:08:56,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1091 transitions, 13816 flow
[2024-11-24 02:08:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states.
[2024-11-24 02:08:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2024-11-24 02:08:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 915 transitions.
[2024-11-24 02:08:56,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909
[2024-11-24 02:08:56,606 INFO L175 Difference]: Start difference. First operand has 336 places, 696 transitions, 7312 flow. Second operand 61 states and 915 transitions.
[2024-11-24 02:08:56,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1091 transitions, 13816 flow
[2024-11-24 02:08:57,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1091 transitions, 13359 flow, removed 182 selfloop flow, removed 16 redundant places.
[2024-11-24 02:08:57,830 INFO L231 Difference]: Finished difference. Result has 395 places, 933 transitions, 12180 flow
[2024-11-24 02:08:57,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6922, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=12180, PETRI_PLACES=395, PETRI_TRANSITIONS=933}
[2024-11-24 02:08:57,831 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 351 predicate places.
[2024-11-24 02:08:57,831 INFO L471 AbstractCegarLoop]: Abstraction has has 395 places, 933 transitions, 12180 flow
[2024-11-24 02:08:57,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.76923076923077) internal successors, (459), 39 states have internal predecessors, (459), 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 02:08:57,831 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:08:57,831 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:08:57,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-11-24 02:08:58,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:08:58,036 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:08:58,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:08:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1773634855, now seen corresponding path program 6 times
[2024-11-24 02:08:58,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:08:58,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058391576]
[2024-11-24 02:08:58,037 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-24 02:08:58,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:08:58,062 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2024-11-24 02:08:58,063 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:09:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:09:02,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:09:02,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058391576]
[2024-11-24 02:09:02,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058391576] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:09:02,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645405022]
[2024-11-24 02:09:02,789 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-24 02:09:02,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:09:02,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:09:02,792 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:09:02,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-24 02:09:02,952 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2024-11-24 02:09:02,953 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:09:02,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 36 conjuncts are in the unsatisfiable core
[2024-11-24 02:09:02,956 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:09:03,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-24 02:09:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:09:06,853 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 02:09:12,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:09:12,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 291 treesize of output 297
[2024-11-24 02:09:13,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:09:13,681 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 35 treesize of output 31
[2024-11-24 02:09:13,750 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-24 02:09:13,751 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23
[2024-11-24 02:09:13,791 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2024-11-24 02:09:13,792 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 28 treesize of output 1
[2024-11-24 02:09:13,816 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-24 02:09:13,817 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2024-11-24 02:09:13,855 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-24 02:09:13,855 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23
[2024-11-24 02:09:16,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:09:16,304 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 22 treesize of output 18
[2024-11-24 02:09:16,353 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2024-11-24 02:09:16,353 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 22 treesize of output 1
[2024-11-24 02:09:16,374 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-24 02:09:16,375 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10
[2024-11-24 02:09:16,560 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2024-11-24 02:09:16,560 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 22 treesize of output 1
[2024-11-24 02:09:16,582 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-24 02:09:16,583 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10
[2024-11-24 02:09:16,715 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2024-11-24 02:09:16,715 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 22 treesize of output 1
[2024-11-24 02:09:16,744 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-24 02:09:16,745 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10
[2024-11-24 02:09:16,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:09:16,845 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 102 treesize of output 86
[2024-11-24 02:09:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:09:18,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645405022] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 02:09:18,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 02:09:18,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 37
[2024-11-24 02:09:18,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722172121]
[2024-11-24 02:09:18,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 02:09:18,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2024-11-24 02:09:18,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:09:18,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2024-11-24 02:09:18,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406
[2024-11-24 02:09:20,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:09:20,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 933 transitions, 12180 flow. Second operand has 38 states, 38 states have (on average 11.81578947368421) internal successors, (449), 38 states have internal predecessors, (449), 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 02:09:20,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:09:20,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:09:20,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:09:32,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:09:42,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:09:46,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:09:48,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:09:52,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:10:01,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:10:05,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:10:14,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:10:16,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:10:20,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:10:33,846 INFO L124 PetriNetUnfolderBase]: 3180/5739 cut-off events.
[2024-11-24 02:10:33,846 INFO L125 PetriNetUnfolderBase]: For 231032/231032 co-relation queries the response was YES.
[2024-11-24 02:10:33,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47207 conditions, 5739 events. 3180/5739 cut-off events. For 231032/231032 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 38953 event pairs, 104 based on Foata normal form. 21/5758 useless extension candidates. Maximal degree in co-relation 46800. Up to 1975 conditions per place.
[2024-11-24 02:10:33,906 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 448 selfloop transitions, 771 changer transitions 19/1241 dead transitions.
[2024-11-24 02:10:33,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 1241 transitions, 18628 flow
[2024-11-24 02:10:33,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2024-11-24 02:10:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2024-11-24 02:10:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 785 transitions.
[2024-11-24 02:10:33,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34309440559440557
[2024-11-24 02:10:33,910 INFO L175 Difference]: Start difference. First operand has 395 places, 933 transitions, 12180 flow. Second operand 52 states and 785 transitions.
[2024-11-24 02:10:33,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 1241 transitions, 18628 flow
[2024-11-24 02:10:35,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1241 transitions, 18139 flow, removed 153 selfloop flow, removed 25 redundant places.
[2024-11-24 02:10:35,365 INFO L231 Difference]: Finished difference. Result has 433 places, 1110 transitions, 17348 flow
[2024-11-24 02:10:35,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11785, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=603, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=17348, PETRI_PLACES=433, PETRI_TRANSITIONS=1110}
[2024-11-24 02:10:35,366 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 389 predicate places.
[2024-11-24 02:10:35,366 INFO L471 AbstractCegarLoop]: Abstraction has has 433 places, 1110 transitions, 17348 flow
[2024-11-24 02:10:35,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 11.81578947368421) internal successors, (449), 38 states have internal predecessors, (449), 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 02:10:35,366 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:10:35,366 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:10:35,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-24 02:10:35,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:10:35,567 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:10:35,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:10:35,568 INFO L85 PathProgramCache]: Analyzing trace with hash 401432295, now seen corresponding path program 7 times
[2024-11-24 02:10:35,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:10:35,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107172665]
[2024-11-24 02:10:35,568 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-24 02:10:35,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:10:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:10:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:10:43,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:10:43,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107172665]
[2024-11-24 02:10:43,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107172665] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:10:43,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295309605]
[2024-11-24 02:10:43,167 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-24 02:10:43,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:10:43,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:10:43,169 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:10:43,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-24 02:10:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:10:43,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 46 conjuncts are in the unsatisfiable core
[2024-11-24 02:10:43,259 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:10:43,290 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 02:10:43,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-24 02:10:44,209 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 02:10:44,209 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 02:10:44,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 02:10:45,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 02:10:48,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18
[2024-11-24 02:10:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-24 02:10:49,791 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 02:10:58,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:10:58,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 64
[2024-11-24 02:10:58,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:10:58,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 91
[2024-11-24 02:10:59,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:10:59,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 127
[2024-11-24 02:11:00,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:11:00,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42
[2024-11-24 02:11:01,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:11:01,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 54
[2024-11-24 02:11:01,639 INFO L349 Elim1Store]: treesize reduction 5, result has 93.8 percent of original size
[2024-11-24 02:11:01,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 112
[2024-11-24 02:11:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:11:04,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295309605] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 02:11:04,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 02:11:04,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 41
[2024-11-24 02:11:04,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193670743]
[2024-11-24 02:11:04,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 02:11:04,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2024-11-24 02:11:04,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:11:04,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2024-11-24 02:11:04,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1554, Unknown=5, NotChecked=0, Total=1722
[2024-11-24 02:11:11,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 44
[2024-11-24 02:11:11,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 1110 transitions, 17348 flow. Second operand has 42 states, 42 states have (on average 6.761904761904762) internal successors, (284), 42 states have internal predecessors, (284), 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 02:11:11,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:11:11,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 44
[2024-11-24 02:11:11,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:11:48,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:11:58,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-24 02:12:24,922 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 02:13:06,613 INFO L124 PetriNetUnfolderBase]: 4758/8579 cut-off events.
[2024-11-24 02:13:06,613 INFO L125 PetriNetUnfolderBase]: For 354580/354580 co-relation queries the response was YES.
[2024-11-24 02:13:06,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77491 conditions, 8579 events. 4758/8579 cut-off events. For 354580/354580 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 63395 event pairs, 191 based on Foata normal form. 26/8601 useless extension candidates. Maximal degree in co-relation 76868. Up to 2908 conditions per place.
[2024-11-24 02:13:06,704 INFO L140 encePairwiseOnDemand]: 26/44 looper letters, 944 selfloop transitions, 991 changer transitions 24/1962 dead transitions.
[2024-11-24 02:13:06,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1962 transitions, 34869 flow
[2024-11-24 02:13:06,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states.
[2024-11-24 02:13:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states.
[2024-11-24 02:13:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 972 transitions.
[2024-11-24 02:13:06,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.22090909090909092
[2024-11-24 02:13:06,708 INFO L175 Difference]: Start difference. First operand has 433 places, 1110 transitions, 17348 flow. Second operand 100 states and 972 transitions.
[2024-11-24 02:13:06,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1962 transitions, 34869 flow
[2024-11-24 02:13:09,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 1962 transitions, 34426 flow, removed 120 selfloop flow, removed 28 redundant places.
[2024-11-24 02:13:10,020 INFO L231 Difference]: Finished difference. Result has 541 places, 1642 transitions, 30858 flow
[2024-11-24 02:13:10,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16994, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=547, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=30858, PETRI_PLACES=541, PETRI_TRANSITIONS=1642}
[2024-11-24 02:13:10,021 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 497 predicate places.
[2024-11-24 02:13:10,022 INFO L471 AbstractCegarLoop]: Abstraction has has 541 places, 1642 transitions, 30858 flow
[2024-11-24 02:13:10,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.761904761904762) internal successors, (284), 42 states have internal predecessors, (284), 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 02:13:10,022 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:13:10,022 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:13:10,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-24 02:13:10,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:13:10,223 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:13:10,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:13:10,223 INFO L85 PathProgramCache]: Analyzing trace with hash -94820313, now seen corresponding path program 8 times
[2024-11-24 02:13:10,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:13:10,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486227587]
[2024-11-24 02:13:10,223 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 02:13:10,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:13:10,245 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 02:13:10,245 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:13:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-11-24 02:13:13,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:13:13,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486227587]
[2024-11-24 02:13:13,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486227587] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:13:13,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434675462]
[2024-11-24 02:13:13,491 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-24 02:13:13,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:13:13,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:13:13,493 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:13:13,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-24 02:13:13,587 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-24 02:13:13,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:13:13,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 41 conjuncts are in the unsatisfiable core
[2024-11-24 02:13:13,591 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:13:13,694 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 02:13:14,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-24 02:13:14,545 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 02:13:14,545 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 02:13:14,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 02:13:15,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 02:13:17,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18
[2024-11-24 02:13:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-11-24 02:13:19,207 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 02:13:28,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:13:28,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 64
[2024-11-24 02:13:28,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:13:28,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 91
[2024-11-24 02:13:28,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:13:28,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 127
[2024-11-24 02:13:29,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:13:29,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42
[2024-11-24 02:13:29,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:13:29,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 54
[2024-11-24 02:13:30,450 INFO L349 Elim1Store]: treesize reduction 5, result has 93.8 percent of original size
[2024-11-24 02:13:30,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 112
[2024-11-24 02:13:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:13:32,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434675462] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 02:13:32,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 02:13:32,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 36
[2024-11-24 02:13:32,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91273057]
[2024-11-24 02:13:32,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 02:13:32,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2024-11-24 02:13:32,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:13:32,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2024-11-24 02:13:32,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1171, Unknown=5, NotChecked=0, Total=1332
[2024-11-24 02:13:33,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 44
[2024-11-24 02:13:33,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 1642 transitions, 30858 flow. Second operand has 37 states, 37 states have (on average 6.918918918918919) internal successors, (256), 37 states have internal predecessors, (256), 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 02:13:33,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:13:33,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 44
[2024-11-24 02:13:33,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:13:40,200 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse18 (* c_~q1_front~0 4)) (.cse19 (* c_~q1_back~0 4))) (let ((.cse0 (< c_~n1~0 (+ c_~q1_back~0 1))) (.cse11 (+ c_~i~0 1)) (.cse8 (* c_~q2_front~0 4)) (.cse9 (* c_~q2_back~0 4)) (.cse3 (+ .cse19 c_~q1~0.offset)) (.cse12 (+ .cse18 c_~q1~0.offset)) (.cse1 (< c_~q1_back~0 0)) (.cse4 (< c_~q2_back~0 c_~q2_front~0)) (.cse5 (< c_~q2_front~0 0))) (and (= c_~j~0 c_~i~0) (let ((.cse2 (select |c_#memory_int#1| c_~q1~0.base))) (or .cse0 .cse1 (not (= c_~j~0 (select .cse2 .cse3))) .cse4 .cse5 (let ((.cse6 (select .cse2 .cse12))) (let ((.cse10 (< .cse6 c_~i~0)) (.cse7 (select |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (and (or (forall ((~q2~0.offset Int)) (or (< .cse6 (+ (select .cse7 (+ ~q2~0.offset .cse8)) 1)) (not (= c_~i~0 (select .cse7 (+ ~q2~0.offset .cse9)))))) .cse10) (or .cse10 (forall ((~q2~0.offset Int)) (or (< (select .cse7 (+ ~q2~0.offset .cse8)) .cse11) (not (= c_~i~0 (select .cse7 (+ ~q2~0.offset .cse9)))))))))))) (or .cse0 (< |c_ULTIMATE.start_create_fresh_int_array_~i~1#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse1 (let ((.cse15 (+ .cse19 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse16 (+ .cse18 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_162| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_162|) 0)) (forall ((v_ArrVal_256 (Array Int Int))) (let ((.cse14 (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_162| v_ArrVal_256) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse13 (select .cse14 .cse16))) (or (forall ((~q2~0.offset Int)) (or (not (= (select v_ArrVal_256 (+ ~q2~0.offset .cse9)) c_~i~0)) (< .cse13 (+ (select v_ArrVal_256 (+ ~q2~0.offset .cse8)) 1)))) (not (= c_~j~0 (select .cse14 .cse15))) (< .cse13 c_~i~0))))))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_162| Int)) (or (forall ((v_ArrVal_256 (Array Int Int))) (let ((.cse17 (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_162| v_ArrVal_256) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (= c_~j~0 (select .cse17 .cse15))) (forall ((~q2~0.offset Int)) (or (not (= (select v_ArrVal_256 (+ ~q2~0.offset .cse9)) c_~i~0)) (< (select v_ArrVal_256 (+ ~q2~0.offset .cse8)) .cse11))) (< (select .cse17 .cse16) c_~i~0)))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_162|) 0)))))) .cse4 .cse5) (or .cse0 (and (forall ((v_ArrVal_256 (Array Int Int))) (let ((.cse20 (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_256) c_~q1~0.base))) (or (forall ((~q2~0.offset Int)) (or (not (= (select v_ArrVal_256 (+ ~q2~0.offset .cse9)) c_~i~0)) (< (select v_ArrVal_256 (+ ~q2~0.offset .cse8)) .cse11))) (not (= c_~j~0 (select .cse20 .cse3))) (< (select .cse20 .cse12) c_~i~0)))) (forall ((v_ArrVal_256 (Array Int Int))) (let ((.cse22 (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_256) c_~q1~0.base))) (let ((.cse21 (select .cse22 .cse12))) (or (forall ((~q2~0.offset Int)) (or (< .cse21 (+ (select v_ArrVal_256 (+ ~q2~0.offset .cse8)) 1)) (not (= (select v_ArrVal_256 (+ ~q2~0.offset .cse9)) c_~i~0)))) (not (= c_~j~0 (select .cse22 .cse3))) (< .cse21 c_~i~0)))))) .cse1 .cse4 .cse5)))) is different from false
[2024-11-24 02:14:08,293 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 02:14:46,206 INFO L124 PetriNetUnfolderBase]: 5641/10148 cut-off events.
[2024-11-24 02:14:46,207 INFO L125 PetriNetUnfolderBase]: For 452945/452945 co-relation queries the response was YES.
[2024-11-24 02:14:46,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99801 conditions, 10148 events. 5641/10148 cut-off events. For 452945/452945 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 77347 event pairs, 298 based on Foata normal form. 13/10157 useless extension candidates. Maximal degree in co-relation 99074. Up to 5716 conditions per place.
[2024-11-24 02:14:46,439 INFO L140 encePairwiseOnDemand]: 26/44 looper letters, 1117 selfloop transitions, 1104 changer transitions 10/2234 dead transitions.
[2024-11-24 02:14:46,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 2234 transitions, 45287 flow
[2024-11-24 02:14:46,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states.
[2024-11-24 02:14:46,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2024-11-24 02:14:46,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 691 transitions.
[2024-11-24 02:14:46,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.22119078104993598
[2024-11-24 02:14:46,442 INFO L175 Difference]: Start difference. First operand has 541 places, 1642 transitions, 30858 flow. Second operand 71 states and 691 transitions.
[2024-11-24 02:14:46,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 2234 transitions, 45287 flow
[2024-11-24 02:14:53,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 2234 transitions, 42381 flow, removed 1424 selfloop flow, removed 7 redundant places.
[2024-11-24 02:14:53,833 INFO L231 Difference]: Finished difference. Result has 635 places, 1989 transitions, 39982 flow
[2024-11-24 02:14:53,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=28850, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=797, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=699, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=39982, PETRI_PLACES=635, PETRI_TRANSITIONS=1989}
[2024-11-24 02:14:53,834 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 591 predicate places.
[2024-11-24 02:14:53,834 INFO L471 AbstractCegarLoop]: Abstraction has has 635 places, 1989 transitions, 39982 flow
[2024-11-24 02:14:53,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.918918918918919) internal successors, (256), 37 states have internal predecessors, (256), 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 02:14:53,834 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:14:53,834 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:14:53,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-24 02:14:54,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2024-11-24 02:14:54,035 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:14:54,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:14:54,036 INFO L85 PathProgramCache]: Analyzing trace with hash -277712575, now seen corresponding path program 9 times
[2024-11-24 02:14:54,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:14:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21322119]
[2024-11-24 02:14:54,036 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 02:14:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:14:54,067 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 02:14:54,067 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:14:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2024-11-24 02:14:57,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:14:57,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21322119]
[2024-11-24 02:14:57,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21322119] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:14:57,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390703975]
[2024-11-24 02:14:57,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-24 02:14:57,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:14:57,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:14:57,332 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:14:57,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-24 02:14:57,449 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-24 02:14:57,449 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:14:57,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-11-24 02:14:57,452 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:15:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-24 02:15:01,502 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 02:15:01,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390703975] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:15:01,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 02:15:01,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 21
[2024-11-24 02:15:01,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368516767]
[2024-11-24 02:15:01,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:15:01,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-24 02:15:01,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:15:01,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-24 02:15:01,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462
[2024-11-24 02:15:01,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44
[2024-11-24 02:15:01,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 1989 transitions, 39982 flow. Second operand has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 11 states have internal predecessors, (134), 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 02:15:01,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:15:01,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44
[2024-11-24 02:15:01,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:15:16,556 INFO L124 PetriNetUnfolderBase]: 6722/12059 cut-off events.
[2024-11-24 02:15:16,556 INFO L125 PetriNetUnfolderBase]: For 444467/444467 co-relation queries the response was YES.
[2024-11-24 02:15:16,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119448 conditions, 12059 events. 6722/12059 cut-off events. For 444467/444467 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 94433 event pairs, 422 based on Foata normal form. 8/12058 useless extension candidates. Maximal degree in co-relation 118986. Up to 7560 conditions per place.
[2024-11-24 02:15:16,891 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 1870 selfloop transitions, 528 changer transitions 128/2529 dead transitions.
[2024-11-24 02:15:16,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 2529 transitions, 56112 flow
[2024-11-24 02:15:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-11-24 02:15:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2024-11-24 02:15:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 271 transitions.
[2024-11-24 02:15:16,893 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4106060606060606
[2024-11-24 02:15:16,893 INFO L175 Difference]: Start difference. First operand has 635 places, 1989 transitions, 39982 flow. Second operand 15 states and 271 transitions.
[2024-11-24 02:15:16,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 2529 transitions, 56112 flow
[2024-11-24 02:15:26,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 2529 transitions, 55575 flow, removed 186 selfloop flow, removed 19 redundant places.
[2024-11-24 02:15:26,261 INFO L231 Difference]: Finished difference. Result has 640 places, 2216 transitions, 47595 flow
[2024-11-24 02:15:26,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=39531, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1989, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=47595, PETRI_PLACES=640, PETRI_TRANSITIONS=2216}
[2024-11-24 02:15:26,263 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 596 predicate places.
[2024-11-24 02:15:26,264 INFO L471 AbstractCegarLoop]: Abstraction has has 640 places, 2216 transitions, 47595 flow
[2024-11-24 02:15:26,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 11 states have internal predecessors, (134), 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 02:15:26,264 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:15:26,264 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:15:26,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-11-24 02:15:26,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2024-11-24 02:15:26,465 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:15:26,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:15:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1985651283, now seen corresponding path program 10 times
[2024-11-24 02:15:26,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:15:26,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531990276]
[2024-11-24 02:15:26,466 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 02:15:26,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:15:26,500 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 02:15:26,500 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:15:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-24 02:15:35,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:15:35,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531990276]
[2024-11-24 02:15:35,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531990276] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:15:35,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193271955]
[2024-11-24 02:15:35,315 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-24 02:15:35,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:15:35,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:15:35,317 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:15:35,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-24 02:15:35,437 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-24 02:15:35,437 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:15:35,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 46 conjuncts are in the unsatisfiable core
[2024-11-24 02:15:35,441 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 02:15:35,526 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 02:15:36,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-24 02:15:36,584 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-24 02:15:36,585 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 02:15:37,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 02:15:37,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 02:15:41,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18
[2024-11-24 02:15:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-24 02:15:42,896 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 02:15:52,660 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:15:52,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 64
[2024-11-24 02:15:52,675 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-24 02:15:52,736 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:15:52,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 27
[2024-11-24 02:15:52,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:15:52,808 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 22 treesize of output 18
[2024-11-24 02:15:53,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:15:53,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42
[2024-11-24 02:15:53,057 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-24 02:15:53,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-24 02:15:53,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16
[2024-11-24 02:15:53,246 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size
[2024-11-24 02:15:53,247 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 22 treesize of output 13
[2024-11-24 02:15:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-24 02:15:54,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193271955] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 02:15:54,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 02:15:54,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 40
[2024-11-24 02:15:54,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870879524]
[2024-11-24 02:15:54,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 02:15:54,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states
[2024-11-24 02:15:54,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:15:54,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2024-11-24 02:15:54,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1491, Unknown=4, NotChecked=0, Total=1640
[2024-11-24 02:15:59,770 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 44
[2024-11-24 02:15:59,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 2216 transitions, 47595 flow. Second operand has 41 states, 41 states have (on average 6.829268292682927) internal successors, (280), 41 states have internal predecessors, (280), 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 02:15:59,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 02:15:59,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 44
[2024-11-24 02:15:59,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 02:16:36,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:16:41,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:16:45,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:16:49,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:16:53,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:17:14,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]
[2024-11-24 02:17:32,492 INFO L124 PetriNetUnfolderBase]: 7135/12751 cut-off events.
[2024-11-24 02:17:32,492 INFO L125 PetriNetUnfolderBase]: For 527903/527903 co-relation queries the response was YES.
[2024-11-24 02:17:32,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132422 conditions, 12751 events. 7135/12751 cut-off events. For 527903/527903 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 100287 event pairs, 161 based on Foata normal form. 37/12784 useless extension candidates. Maximal degree in co-relation 132244. Up to 5996 conditions per place.
[2024-11-24 02:17:32,868 INFO L140 encePairwiseOnDemand]: 26/44 looper letters, 1076 selfloop transitions, 1620 changer transitions 13/2712 dead transitions.
[2024-11-24 02:17:32,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 2712 transitions, 61955 flow
[2024-11-24 02:17:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2024-11-24 02:17:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2024-11-24 02:17:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 523 transitions.
[2024-11-24 02:17:32,870 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.21611570247933884
[2024-11-24 02:17:32,870 INFO L175 Difference]: Start difference. First operand has 640 places, 2216 transitions, 47595 flow. Second operand 55 states and 523 transitions.
[2024-11-24 02:17:32,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 2712 transitions, 61955 flow
[2024-11-24 02:17:43,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 2712 transitions, 61407 flow, removed 230 selfloop flow, removed 6 redundant places.
[2024-11-24 02:17:43,667 INFO L231 Difference]: Finished difference. Result has 699 places, 2525 transitions, 60109 flow
[2024-11-24 02:17:43,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=47269, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=762, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=60109, PETRI_PLACES=699, PETRI_TRANSITIONS=2525}
[2024-11-24 02:17:43,669 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 655 predicate places.
[2024-11-24 02:17:43,670 INFO L471 AbstractCegarLoop]: Abstraction has has 699 places, 2525 transitions, 60109 flow
[2024-11-24 02:17:43,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.829268292682927) internal successors, (280), 41 states have internal predecessors, (280), 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 02:17:43,670 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 02:17:43,670 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:17:43,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2024-11-24 02:17:43,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2024-11-24 02:17:43,871 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] ===
[2024-11-24 02:17:43,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:17:43,871 INFO L85 PathProgramCache]: Analyzing trace with hash -268199361, now seen corresponding path program 11 times
[2024-11-24 02:17:43,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:17:43,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963326368]
[2024-11-24 02:17:43,871 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 02:17:43,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:17:43,902 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2024-11-24 02:17:43,902 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-24 02:17:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 02:17:51,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:17:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963326368]
[2024-11-24 02:17:51,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963326368] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 02:17:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619535586]
[2024-11-24 02:17:51,311 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-24 02:17:51,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 02:17:51,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:17:51,314 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 02:17:51,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f422390-7482-47dc-bbd9-9e343af8f6d8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process