./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.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_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/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_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/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_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/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 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 22:36:01,376 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-23 22:36:01,483 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2024-11-23 22:36:01,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 22:36:01,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 22:36:01,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 22:36:01,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 22:36:01,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 22:36:01,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 22:36:01,535 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-23 22:36:01,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 22:36:01,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 22:36:01,537 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 22:36:01,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-23 22:36:01,537 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-23 22:36:01,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 22:36:01,538 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-23 22:36:01,538 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-23 22:36:01,538 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-23 22:36:01,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-23 22:36:01,538 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-11-23 22:36:01,538 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-11-23 22:36:01,538 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-11-23 22:36:01,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 22:36:01,539 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-23 22:36:01,539 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-23 22:36:01,539 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-23 22:36:01,539 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 22:36:01,539 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-23 22:36:01,539 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 22:36:01,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 22:36:01,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 22:36:01,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 22:36:01,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 22:36:01,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 22:36:01,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 22:36:01,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 22:36:01,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 22:36:01,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 22:36:01,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 22:36:01,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 22:36:01,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-23 22:36:01,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-23 22:36:01,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 22:36:01,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 22:36:01,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 22:36:01,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 22:36:01,541 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_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/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 -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07
[2024-11-23 22:36:01,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 22:36:01,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 22:36:01,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 22:36:01,929 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-23 22:36:01,931 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-23 22:36:01,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c
[2024-11-23 22:36:05,169 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/data/ccdb8e3d8/be17dcebbaaa41db9d05340196b5c5d6/FLAG88a738af5
[2024-11-23 22:36:05,500 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-23 22:36:05,501 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c
[2024-11-23 22:36:05,516 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/data/ccdb8e3d8/be17dcebbaaa41db9d05340196b5c5d6/FLAG88a738af5
[2024-11-23 22:36:05,532 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/data/ccdb8e3d8/be17dcebbaaa41db9d05340196b5c5d6
[2024-11-23 22:36:05,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 22:36:05,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 22:36:05,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 22:36:05,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 22:36:05,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 22:36:05,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:05,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f6ad4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05, skipping insertion in model container
[2024-11-23 22:36:05,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:05,568 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-23 22:36:05,836 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model
[2024-11-23 22:36:05,842 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 22:36:05,860 INFO L200 MainTranslator]: Completed pre-run
[2024-11-23 22:36:05,901 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 22:36:05,924 INFO L204 MainTranslator]: Completed translation
[2024-11-23 22:36:05,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05 WrapperNode
[2024-11-23 22:36:05,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 22:36:05,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 22:36:05,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 22:36:05,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 22:36:05,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:05,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:05,995 INFO L138 Inliner]: procedures = 23, calls = 21, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 109
[2024-11-23 22:36:05,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 22:36:05,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 22:36:05,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 22:36:05,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 22:36:06,009 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:06,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:06,013 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:06,046 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 3 writes are split as follows [0, 3].
[2024-11-23 22:36:06,047 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:06,047 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:06,062 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:06,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:06,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:06,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:06,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:06,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 22:36:06,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 22:36:06,088 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 22:36:06,088 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-23 22:36:06,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (1/1) ...
[2024-11-23 22:36:06,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 22:36:06,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:06,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 22:36:06,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 22:36:06,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 22:36:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2024-11-23 22:36:06,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2024-11-23 22:36:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2024-11-23 22:36:06,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2024-11-23 22:36:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2024-11-23 22:36:06,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2024-11-23 22:36:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-23 22:36:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-23 22:36:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-23 22:36:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-23 22:36:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-23 22:36:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 22:36:06,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 22:36:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-23 22:36:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-23 22:36:06,185 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-23 22:36:06,323 INFO L234 CfgBuilder]: Building ICFG
[2024-11-23 22:36:06,325 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 22:36:06,759 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-23 22:36:06,759 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-23 22:36:07,032 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 22:36:07,032 INFO L312 CfgBuilder]: Removed 5 assume(true) statements.
[2024-11-23 22:36:07,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:36:07 BoogieIcfgContainer
[2024-11-23 22:36:07,033 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 22:36:07,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 22:36:07,035 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 22:36:07,041 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-23 22:36:07,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:36:05" (1/3) ...
[2024-11-23 22:36:07,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a47ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:36:07, skipping insertion in model container
[2024-11-23 22:36:07,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:05" (2/3) ...
[2024-11-23 22:36:07,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a47ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:36:07, skipping insertion in model container
[2024-11-23 22:36:07,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:36:07" (3/3) ...
[2024-11-23 22:36:07,044 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c
[2024-11-23 22:36:07,059 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 22:36:07,061 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-simple-array-sum.wvr.c that has 4 procedures, 52 locations, 1 initial locations, 5 loop locations, and 14 error locations.
[2024-11-23 22:36:07,061 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-23 22:36:07,136 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2024-11-23 22:36:07,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 57 transitions, 135 flow
[2024-11-23 22:36:07,253 INFO L124 PetriNetUnfolderBase]: 6/54 cut-off events.
[2024-11-23 22:36:07,256 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2024-11-23 22:36:07,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 6/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 114 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place.
[2024-11-23 22:36:07,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 57 transitions, 135 flow
[2024-11-23 22:36:07,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 53 transitions, 124 flow
[2024-11-23 22:36:07,270 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 22:36:07,282 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;@3abfa440, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 22:36:07,282 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations.
[2024-11-23 22:36:07,286 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-23 22:36:07,286 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events.
[2024-11-23 22:36:07,286 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-23 22:36:07,286 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:07,287 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2024-11-23 22:36:07,287 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:07,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:07,295 INFO L85 PathProgramCache]: Analyzing trace with hash 493450, now seen corresponding path program 1 times
[2024-11-23 22:36:07,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:07,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249419028]
[2024-11-23 22:36:07,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:07,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:07,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:07,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249419028]
[2024-11-23 22:36:07,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249419028] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:07,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:07,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-11-23 22:36:07,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622775773]
[2024-11-23 22:36:07,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:07,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-23 22:36:07,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:07,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-23 22:36:07,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 22:36:07,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:07,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 124 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)
[2024-11-23 22:36:07,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:07,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:07,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:08,361 INFO L124 PetriNetUnfolderBase]: 2001/3129 cut-off events.
[2024-11-23 22:36:08,362 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES.
[2024-11-23 22:36:08,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6117 conditions, 3129 events. 2001/3129 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 18507 event pairs, 1627 based on Foata normal form. 1/2095 useless extension candidates. Maximal degree in co-relation 5678. Up to 2795 conditions per place.
[2024-11-23 22:36:08,398 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/49 dead transitions.
[2024-11-23 22:36:08,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 192 flow
[2024-11-23 22:36:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-23 22:36:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-23 22:36:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions.
[2024-11-23 22:36:08,417 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871
[2024-11-23 22:36:08,418 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 124 flow. Second operand 3 states and 86 transitions.
[2024-11-23 22:36:08,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 192 flow
[2024-11-23 22:36:08,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 180 flow, removed 0 selfloop flow, removed 6 redundant places.
[2024-11-23 22:36:08,434 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 108 flow
[2024-11-23 22:36:08,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=49, PETRI_TRANSITIONS=49}
[2024-11-23 22:36:08,442 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -8 predicate places.
[2024-11-23 22:36:08,442 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 108 flow
[2024-11-23 22:36:08,442 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)
[2024-11-23 22:36:08,442 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:08,442 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2024-11-23 22:36:08,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-23 22:36:08,443 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:08,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash 493451, now seen corresponding path program 1 times
[2024-11-23 22:36:08,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:08,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233309486]
[2024-11-23 22:36:08,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:08,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:08,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:08,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233309486]
[2024-11-23 22:36:08,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233309486] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:08,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:08,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-23 22:36:08,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133481935]
[2024-11-23 22:36:08,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:08,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 22:36:08,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:08,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 22:36:08,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 22:36:08,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:08,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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)
[2024-11-23 22:36:08,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:08,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:08,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:09,487 INFO L124 PetriNetUnfolderBase]: 2002/3132 cut-off events.
[2024-11-23 22:36:09,488 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES.
[2024-11-23 22:36:09,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6003 conditions, 3132 events. 2002/3132 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 18512 event pairs, 1627 based on Foata normal form. 0/2095 useless extension candidates. Maximal degree in co-relation 5974. Up to 2804 conditions per place.
[2024-11-23 22:36:09,516 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 39 selfloop transitions, 4 changer transitions 0/52 dead transitions.
[2024-11-23 22:36:09,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 200 flow
[2024-11-23 22:36:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 22:36:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-23 22:36:09,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions.
[2024-11-23 22:36:09,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296
[2024-11-23 22:36:09,518 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 108 flow. Second operand 4 states and 104 transitions.
[2024-11-23 22:36:09,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 200 flow
[2024-11-23 22:36:09,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-23 22:36:09,522 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 131 flow
[2024-11-23 22:36:09,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=52, PETRI_TRANSITIONS=52}
[2024-11-23 22:36:09,524 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places.
[2024-11-23 22:36:09,524 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 131 flow
[2024-11-23 22:36:09,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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)
[2024-11-23 22:36:09,524 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:09,525 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2024-11-23 22:36:09,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-23 22:36:09,525 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:09,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:09,527 INFO L85 PathProgramCache]: Analyzing trace with hash 15298794, now seen corresponding path program 1 times
[2024-11-23 22:36:09,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:09,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580808939]
[2024-11-23 22:36:09,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:09,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:09,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:09,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580808939]
[2024-11-23 22:36:09,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580808939] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:09,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:09,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 22:36:09,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557638812]
[2024-11-23 22:36:09,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:09,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 22:36:09,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:09,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 22:36:09,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 22:36:09,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57
[2024-11-23 22:36:09,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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)
[2024-11-23 22:36:09,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:09,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57
[2024-11-23 22:36:09,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:10,142 INFO L124 PetriNetUnfolderBase]: 2003/3137 cut-off events.
[2024-11-23 22:36:10,143 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES.
[2024-11-23 22:36:10,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6021 conditions, 3137 events. 2003/3137 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 18549 event pairs, 1627 based on Foata normal form. 0/2101 useless extension candidates. Maximal degree in co-relation 5983. Up to 2803 conditions per place.
[2024-11-23 22:36:10,172 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 38 selfloop transitions, 7 changer transitions 0/56 dead transitions.
[2024-11-23 22:36:10,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 56 transitions, 229 flow
[2024-11-23 22:36:10,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 22:36:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-23 22:36:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions.
[2024-11-23 22:36:10,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5
[2024-11-23 22:36:10,177 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 131 flow. Second operand 4 states and 114 transitions.
[2024-11-23 22:36:10,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 56 transitions, 229 flow
[2024-11-23 22:36:10,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-23 22:36:10,179 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 162 flow
[2024-11-23 22:36:10,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=56, PETRI_TRANSITIONS=55}
[2024-11-23 22:36:10,183 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places.
[2024-11-23 22:36:10,184 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 162 flow
[2024-11-23 22:36:10,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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)
[2024-11-23 22:36:10,184 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:10,184 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1]
[2024-11-23 22:36:10,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-23 22:36:10,185 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:10,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:10,186 INFO L85 PathProgramCache]: Analyzing trace with hash 474222245, now seen corresponding path program 1 times
[2024-11-23 22:36:10,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:10,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387679691]
[2024-11-23 22:36:10,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:10,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:10,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387679691]
[2024-11-23 22:36:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387679691] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081021016]
[2024-11-23 22:36:10,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:10,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:10,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:10,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:10,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-23 22:36:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:10,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:10,732 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:10,804 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
[2024-11-23 22:36:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:11,019 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:11,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081021016] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:36:11,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:36:11,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9
[2024-11-23 22:36:11,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117736616]
[2024-11-23 22:36:11,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:36:11,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-23 22:36:11,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:11,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-23 22:36:11,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2024-11-23 22:36:11,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:11,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 162 flow. Second operand has 11 states, 11 states have (on average 16.363636363636363) internal successors, (180), 11 states have internal predecessors, (180), 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)
[2024-11-23 22:36:11,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:11,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:11,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:12,003 INFO L124 PetriNetUnfolderBase]: 2004/3139 cut-off events.
[2024-11-23 22:36:12,003 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES.
[2024-11-23 22:36:12,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6047 conditions, 3139 events. 2004/3139 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 18546 event pairs, 1627 based on Foata normal form. 0/2106 useless extension candidates. Maximal degree in co-relation 5987. Up to 2806 conditions per place.
[2024-11-23 22:36:12,033 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 38 selfloop transitions, 10 changer transitions 0/57 dead transitions.
[2024-11-23 22:36:12,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 57 transitions, 269 flow
[2024-11-23 22:36:12,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-23 22:36:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-23 22:36:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions.
[2024-11-23 22:36:12,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36622807017543857
[2024-11-23 22:36:12,037 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 162 flow. Second operand 8 states and 167 transitions.
[2024-11-23 22:36:12,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 57 transitions, 269 flow
[2024-11-23 22:36:12,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 269 flow, removed 0 selfloop flow, removed 0 redundant places.
[2024-11-23 22:36:12,040 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 193 flow
[2024-11-23 22:36:12,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=57}
[2024-11-23 22:36:12,041 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places.
[2024-11-23 22:36:12,041 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 193 flow
[2024-11-23 22:36:12,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.363636363636363) internal successors, (180), 11 states have internal predecessors, (180), 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)
[2024-11-23 22:36:12,042 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:12,042 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:12,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-23 22:36:12,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:12,247 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:12,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:12,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1815989520, now seen corresponding path program 1 times
[2024-11-23 22:36:12,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:12,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920191828]
[2024-11-23 22:36:12,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:12,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:12,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:12,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920191828]
[2024-11-23 22:36:12,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920191828] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:12,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364009968]
[2024-11-23 22:36:12,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:12,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:12,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:12,621 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:12,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-23 22:36:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:12,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:12,708 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:12,750 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
[2024-11-23 22:36:12,971 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size
[2024-11-23 22:36:12,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 27
[2024-11-23 22:36:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:13,013 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:13,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364009968] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:13,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-23 22:36:13,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 10
[2024-11-23 22:36:13,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811615940]
[2024-11-23 22:36:13,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:13,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 22:36:13,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:13,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 22:36:13,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2024-11-23 22:36:13,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:13,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 22:36:13,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:13,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:13,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:14,082 INFO L124 PetriNetUnfolderBase]: 4002/6234 cut-off events.
[2024-11-23 22:36:14,082 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES.
[2024-11-23 22:36:14,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12006 conditions, 6234 events. 4002/6234 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 40727 event pairs, 3254 based on Foata normal form. 1/4189 useless extension candidates. Maximal degree in co-relation 5996. Up to 2804 conditions per place.
[2024-11-23 22:36:14,131 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 73 selfloop transitions, 7 changer transitions 0/89 dead transitions.
[2024-11-23 22:36:14,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 89 transitions, 425 flow
[2024-11-23 22:36:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 22:36:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-23 22:36:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions.
[2024-11-23 22:36:14,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579
[2024-11-23 22:36:14,133 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 193 flow. Second operand 5 states and 153 transitions.
[2024-11-23 22:36:14,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 89 transitions, 425 flow
[2024-11-23 22:36:14,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 383 flow, removed 6 selfloop flow, removed 7 redundant places.
[2024-11-23 22:36:14,138 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 171 flow
[2024-11-23 22:36:14,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=60, PETRI_TRANSITIONS=57}
[2024-11-23 22:36:14,139 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places.
[2024-11-23 22:36:14,139 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 171 flow
[2024-11-23 22:36:14,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 22:36:14,139 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:14,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:14,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-23 22:36:14,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:14,340 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:14,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:14,340 INFO L85 PathProgramCache]: Analyzing trace with hash 502867447, now seen corresponding path program 1 times
[2024-11-23 22:36:14,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:14,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132567016]
[2024-11-23 22:36:14,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:14,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:14,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:14,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132567016]
[2024-11-23 22:36:14,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132567016] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:14,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:14,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 22:36:14,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797453252]
[2024-11-23 22:36:14,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:14,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 22:36:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:14,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 22:36:14,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-23 22:36:14,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57
[2024-11-23 22:36:14,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 171 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 22:36:14,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:14,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57
[2024-11-23 22:36:14,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:15,500 INFO L124 PetriNetUnfolderBase]: 4162/6524 cut-off events.
[2024-11-23 22:36:15,500 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES.
[2024-11-23 22:36:15,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12651 conditions, 6524 events. 4162/6524 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 42083 event pairs, 2949 based on Foata normal form. 0/4492 useless extension candidates. Maximal degree in co-relation 6885. Up to 3239 conditions per place.
[2024-11-23 22:36:15,536 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 86 selfloop transitions, 10 changer transitions 0/105 dead transitions.
[2024-11-23 22:36:15,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 105 transitions, 469 flow
[2024-11-23 22:36:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 22:36:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-23 22:36:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions.
[2024-11-23 22:36:15,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556
[2024-11-23 22:36:15,539 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 171 flow. Second operand 6 states and 190 transitions.
[2024-11-23 22:36:15,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 105 transitions, 469 flow
[2024-11-23 22:36:15,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 105 transitions, 452 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-11-23 22:36:15,542 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 190 flow
[2024-11-23 22:36:15,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=63, PETRI_TRANSITIONS=59}
[2024-11-23 22:36:15,543 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places.
[2024-11-23 22:36:15,543 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 190 flow
[2024-11-23 22:36:15,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 22:36:15,543 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:15,543 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:15,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-23 22:36:15,544 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:15,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1409222555, now seen corresponding path program 1 times
[2024-11-23 22:36:15,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:15,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474840615]
[2024-11-23 22:36:15,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:15,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-23 22:36:15,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:15,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474840615]
[2024-11-23 22:36:15,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474840615] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:15,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281899538]
[2024-11-23 22:36:15,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:15,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:15,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:15,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:15,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-23 22:36:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:15,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:15,761 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-23 22:36:15,862 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-23 22:36:15,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281899538] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:36:15,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:36:15,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12
[2024-11-23 22:36:15,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310676596]
[2024-11-23 22:36:15,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:36:15,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-23 22:36:15,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:15,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-23 22:36:15,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156
[2024-11-23 22:36:16,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57
[2024-11-23 22:36:16,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 190 flow. Second operand has 13 states, 13 states have (on average 18.53846153846154) internal successors, (241), 13 states have internal predecessors, (241), 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)
[2024-11-23 22:36:16,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:16,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57
[2024-11-23 22:36:16,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:17,153 INFO L124 PetriNetUnfolderBase]: 4902/7676 cut-off events.
[2024-11-23 22:36:17,154 INFO L125 PetriNetUnfolderBase]: For 1250/1382 co-relation queries the response was YES.
[2024-11-23 22:36:17,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15946 conditions, 7676 events. 4902/7676 cut-off events. For 1250/1382 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 50164 event pairs, 4053 based on Foata normal form. 1/5327 useless extension candidates. Maximal degree in co-relation 6230. Up to 4155 conditions per place.
[2024-11-23 22:36:17,205 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 70 selfloop transitions, 18 changer transitions 0/98 dead transitions.
[2024-11-23 22:36:17,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 98 transitions, 479 flow
[2024-11-23 22:36:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-23 22:36:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2024-11-23 22:36:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions.
[2024-11-23 22:36:17,208 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415
[2024-11-23 22:36:17,208 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 190 flow. Second operand 9 states and 240 transitions.
[2024-11-23 22:36:17,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 98 transitions, 479 flow
[2024-11-23 22:36:17,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 98 transitions, 462 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-23 22:36:17,215 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 258 flow
[2024-11-23 22:36:17,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=258, PETRI_PLACES=70, PETRI_TRANSITIONS=65}
[2024-11-23 22:36:17,216 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places.
[2024-11-23 22:36:17,216 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 258 flow
[2024-11-23 22:36:17,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.53846153846154) internal successors, (241), 13 states have internal predecessors, (241), 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)
[2024-11-23 22:36:17,217 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:17,217 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:17,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-23 22:36:17,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-11-23 22:36:17,423 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:17,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2109897637, now seen corresponding path program 1 times
[2024-11-23 22:36:17,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:17,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882713334]
[2024-11-23 22:36:17,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:17,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:17,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:17,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882713334]
[2024-11-23 22:36:17,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882713334] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:17,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 22:36:17,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456858520]
[2024-11-23 22:36:17,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:17,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 22:36:17,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:17,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 22:36:17,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-23 22:36:17,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57
[2024-11-23 22:36:17,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 22:36:17,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:17,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57
[2024-11-23 22:36:17,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:18,746 INFO L124 PetriNetUnfolderBase]: 4680/7204 cut-off events.
[2024-11-23 22:36:18,746 INFO L125 PetriNetUnfolderBase]: For 920/1198 co-relation queries the response was YES.
[2024-11-23 22:36:18,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14816 conditions, 7204 events. 4680/7204 cut-off events. For 920/1198 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 45558 event pairs, 3780 based on Foata normal form. 0/4999 useless extension candidates. Maximal degree in co-relation 6844. Up to 6213 conditions per place.
[2024-11-23 22:36:18,818 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 75 selfloop transitions, 12 changer transitions 0/96 dead transitions.
[2024-11-23 22:36:18,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 516 flow
[2024-11-23 22:36:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 22:36:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-23 22:36:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions.
[2024-11-23 22:36:18,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485
[2024-11-23 22:36:18,821 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 258 flow. Second operand 6 states and 175 transitions.
[2024-11-23 22:36:18,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 516 flow
[2024-11-23 22:36:18,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 484 flow, removed 6 selfloop flow, removed 3 redundant places.
[2024-11-23 22:36:18,827 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 267 flow
[2024-11-23 22:36:18,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=74, PETRI_TRANSITIONS=67}
[2024-11-23 22:36:18,828 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places.
[2024-11-23 22:36:18,828 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 267 flow
[2024-11-23 22:36:18,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 22:36:18,828 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:18,828 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1]
[2024-11-23 22:36:18,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-23 22:36:18,829 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:18,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash 131915969, now seen corresponding path program 2 times
[2024-11-23 22:36:18,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:18,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491547919]
[2024-11-23 22:36:18,829 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:36:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:18,878 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:36:18,878 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:36:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:36:19,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:19,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491547919]
[2024-11-23 22:36:19,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491547919] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:19,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804071174]
[2024-11-23 22:36:19,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:36:19,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:19,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:19,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:19,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-23 22:36:19,379 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:36:19,379 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:36:19,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:19,384 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:19,410 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
[2024-11-23 22:36:19,629 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size
[2024-11-23 22:36:19,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 27
[2024-11-23 22:36:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:36:19,755 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:36:20,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804071174] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:36:20,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:36:20,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16
[2024-11-23 22:36:20,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295952003]
[2024-11-23 22:36:20,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:36:20,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-23 22:36:20,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:20,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-23 22:36:20,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306
[2024-11-23 22:36:20,554 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:20,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 267 flow. Second operand has 18 states, 18 states have (on average 16.666666666666668) internal successors, (300), 18 states have internal predecessors, (300), 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)
[2024-11-23 22:36:20,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:20,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:20,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:23,096 INFO L124 PetriNetUnfolderBase]: 6503/10242 cut-off events.
[2024-11-23 22:36:23,096 INFO L125 PetriNetUnfolderBase]: For 2346/2852 co-relation queries the response was YES.
[2024-11-23 22:36:23,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22000 conditions, 10242 events. 6503/10242 cut-off events. For 2346/2852 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 71951 event pairs, 5363 based on Foata normal form. 4/7351 useless extension candidates. Maximal degree in co-relation 12859. Up to 6019 conditions per place.
[2024-11-23 22:36:23,185 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 80 selfloop transitions, 34 changer transitions 0/123 dead transitions.
[2024-11-23 22:36:23,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 123 transitions, 720 flow
[2024-11-23 22:36:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-11-23 22:36:23,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2024-11-23 22:36:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 350 transitions.
[2024-11-23 22:36:23,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38377192982456143
[2024-11-23 22:36:23,188 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 267 flow. Second operand 16 states and 350 transitions.
[2024-11-23 22:36:23,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 123 transitions, 720 flow
[2024-11-23 22:36:23,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 123 transitions, 698 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-23 22:36:23,202 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 459 flow
[2024-11-23 22:36:23,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=459, PETRI_PLACES=93, PETRI_TRANSITIONS=83}
[2024-11-23 22:36:23,203 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 36 predicate places.
[2024-11-23 22:36:23,203 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 459 flow
[2024-11-23 22:36:23,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.666666666666668) internal successors, (300), 18 states have internal predecessors, (300), 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)
[2024-11-23 22:36:23,204 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:23,204 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:23,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-23 22:36:23,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:23,409 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:23,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:23,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1153153626, now seen corresponding path program 1 times
[2024-11-23 22:36:23,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:23,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255184081]
[2024-11-23 22:36:23,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:23,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-23 22:36:23,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:23,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255184081]
[2024-11-23 22:36:23,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255184081] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:23,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:23,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 22:36:23,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823113221]
[2024-11-23 22:36:23,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:23,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 22:36:23,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:23,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 22:36:23,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-23 22:36:23,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:23,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 459 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 22:36:23,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:23,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:23,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:24,523 INFO L124 PetriNetUnfolderBase]: 4975/7980 cut-off events.
[2024-11-23 22:36:24,524 INFO L125 PetriNetUnfolderBase]: For 2126/2420 co-relation queries the response was YES.
[2024-11-23 22:36:24,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17624 conditions, 7980 events. 4975/7980 cut-off events. For 2126/2420 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 54970 event pairs, 4064 based on Foata normal form. 0/6215 useless extension candidates. Maximal degree in co-relation 17572. Up to 7150 conditions per place.
[2024-11-23 22:36:24,593 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 55 selfloop transitions, 16 changer transitions 0/81 dead transitions.
[2024-11-23 22:36:24,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 81 transitions, 597 flow
[2024-11-23 22:36:24,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 22:36:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-23 22:36:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions.
[2024-11-23 22:36:24,596 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39649122807017545
[2024-11-23 22:36:24,596 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 459 flow. Second operand 5 states and 113 transitions.
[2024-11-23 22:36:24,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 81 transitions, 597 flow
[2024-11-23 22:36:24,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 549 flow, removed 5 selfloop flow, removed 6 redundant places.
[2024-11-23 22:36:24,612 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 439 flow
[2024-11-23 22:36:24,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=439, PETRI_PLACES=89, PETRI_TRANSITIONS=81}
[2024-11-23 22:36:24,614 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places.
[2024-11-23 22:36:24,616 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 439 flow
[2024-11-23 22:36:24,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 22:36:24,616 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:24,617 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:24,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-11-23 22:36:24,617 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:24,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:24,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1153153625, now seen corresponding path program 1 times
[2024-11-23 22:36:24,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:24,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010280891]
[2024-11-23 22:36:24,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:24,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:36:24,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:24,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010280891]
[2024-11-23 22:36:24,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010280891] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:24,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111425614]
[2024-11-23 22:36:24,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:24,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:24,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:24,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:24,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-23 22:36:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:25,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 31 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:25,073 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:25,093 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
[2024-11-23 22:36:25,103 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
[2024-11-23 22:36:25,203 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-23 22:36:25,203 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
[2024-11-23 22:36:25,242 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 31 treesize of output 24
[2024-11-23 22:36:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-23 22:36:25,639 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-23 22:36:26,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111425614] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:26,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-23 22:36:26,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 12
[2024-11-23 22:36:26,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129488024]
[2024-11-23 22:36:26,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:26,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 22:36:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:26,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 22:36:26,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2024-11-23 22:36:26,245 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57
[2024-11-23 22:36:26,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 439 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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)
[2024-11-23 22:36:26,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:26,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57
[2024-11-23 22:36:26,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:27,627 INFO L124 PetriNetUnfolderBase]: 6196/9654 cut-off events.
[2024-11-23 22:36:27,627 INFO L125 PetriNetUnfolderBase]: For 2364/2940 co-relation queries the response was YES.
[2024-11-23 22:36:27,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21361 conditions, 9654 events. 6196/9654 cut-off events. For 2364/2940 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 63623 event pairs, 3332 based on Foata normal form. 0/7481 useless extension candidates. Maximal degree in co-relation 21309. Up to 5140 conditions per place.
[2024-11-23 22:36:27,693 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 86 selfloop transitions, 23 changer transitions 0/119 dead transitions.
[2024-11-23 22:36:27,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 119 transitions, 755 flow
[2024-11-23 22:36:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-23 22:36:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-23 22:36:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions.
[2024-11-23 22:36:27,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5012531328320802
[2024-11-23 22:36:27,695 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 439 flow. Second operand 7 states and 200 transitions.
[2024-11-23 22:36:27,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 119 transitions, 755 flow
[2024-11-23 22:36:27,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 119 transitions, 734 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-23 22:36:27,713 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 491 flow
[2024-11-23 22:36:27,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=491, PETRI_PLACES=94, PETRI_TRANSITIONS=83}
[2024-11-23 22:36:27,715 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places.
[2024-11-23 22:36:27,715 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 491 flow
[2024-11-23 22:36:27,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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)
[2024-11-23 22:36:27,715 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:27,716 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:27,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-11-23 22:36:27,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:27,920 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:27,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:27,921 INFO L85 PathProgramCache]: Analyzing trace with hash -179115387, now seen corresponding path program 1 times
[2024-11-23 22:36:27,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:27,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188266557]
[2024-11-23 22:36:27,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:27,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:27,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:27,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188266557]
[2024-11-23 22:36:27,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188266557] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:27,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:27,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 22:36:27,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242903852]
[2024-11-23 22:36:27,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:27,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 22:36:27,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:27,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 22:36:27,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-23 22:36:28,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:28,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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)
[2024-11-23 22:36:28,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:28,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:28,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:29,458 INFO L124 PetriNetUnfolderBase]: 9784/15008 cut-off events.
[2024-11-23 22:36:29,459 INFO L125 PetriNetUnfolderBase]: For 15941/17219 co-relation queries the response was YES.
[2024-11-23 22:36:29,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38414 conditions, 15008 events. 9784/15008 cut-off events. For 15941/17219 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 95256 event pairs, 2090 based on Foata normal form. 359/13348 useless extension candidates. Maximal degree in co-relation 38360. Up to 9010 conditions per place.
[2024-11-23 22:36:29,537 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 116 selfloop transitions, 4 changer transitions 0/128 dead transitions.
[2024-11-23 22:36:29,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 905 flow
[2024-11-23 22:36:29,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 22:36:29,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-23 22:36:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions.
[2024-11-23 22:36:29,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754
[2024-11-23 22:36:29,539 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 491 flow. Second operand 4 states and 136 transitions.
[2024-11-23 22:36:29,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 128 transitions, 905 flow
[2024-11-23 22:36:29,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 128 transitions, 870 flow, removed 3 selfloop flow, removed 4 redundant places.
[2024-11-23 22:36:29,549 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 487 flow
[2024-11-23 22:36:29,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=487, PETRI_PLACES=95, PETRI_TRANSITIONS=86}
[2024-11-23 22:36:29,550 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places.
[2024-11-23 22:36:29,550 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 487 flow
[2024-11-23 22:36:29,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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)
[2024-11-23 22:36:29,550 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:29,550 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:29,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-11-23 22:36:29,550 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:29,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:29,551 INFO L85 PathProgramCache]: Analyzing trace with hash -113281974, now seen corresponding path program 1 times
[2024-11-23 22:36:29,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:29,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200598269]
[2024-11-23 22:36:29,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:36:29,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:29,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200598269]
[2024-11-23 22:36:29,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200598269] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:29,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691093504]
[2024-11-23 22:36:29,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:29,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:29,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:29,826 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:29,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-23 22:36:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:29,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 31 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:29,910 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:29,922 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
[2024-11-23 22:36:29,929 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
[2024-11-23 22:36:29,994 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-23 22:36:29,994 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
[2024-11-23 22:36:30,020 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 31 treesize of output 24
[2024-11-23 22:36:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-23 22:36:30,327 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-23 22:36:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691093504] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:30,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-23 22:36:30,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 12
[2024-11-23 22:36:30,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051083871]
[2024-11-23 22:36:30,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:30,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 22:36:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:30,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 22:36:30,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2024-11-23 22:36:31,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57
[2024-11-23 22:36:31,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 487 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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)
[2024-11-23 22:36:31,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:31,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57
[2024-11-23 22:36:31,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:32,671 INFO L124 PetriNetUnfolderBase]: 8009/12448 cut-off events.
[2024-11-23 22:36:32,671 INFO L125 PetriNetUnfolderBase]: For 13214/14363 co-relation queries the response was YES.
[2024-11-23 22:36:32,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33045 conditions, 12448 events. 8009/12448 cut-off events. For 13214/14363 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 80615 event pairs, 2207 based on Foata normal form. 0/10687 useless extension candidates. Maximal degree in co-relation 32990. Up to 6714 conditions per place.
[2024-11-23 22:36:32,758 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 84 selfloop transitions, 23 changer transitions 0/119 dead transitions.
[2024-11-23 22:36:32,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 119 transitions, 821 flow
[2024-11-23 22:36:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-23 22:36:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-23 22:36:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions.
[2024-11-23 22:36:32,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48120300751879697
[2024-11-23 22:36:32,760 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 487 flow. Second operand 7 states and 192 transitions.
[2024-11-23 22:36:32,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 119 transitions, 821 flow
[2024-11-23 22:36:32,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 119 transitions, 821 flow, removed 0 selfloop flow, removed 0 redundant places.
[2024-11-23 22:36:32,782 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 560 flow
[2024-11-23 22:36:32,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=560, PETRI_PLACES=103, PETRI_TRANSITIONS=88}
[2024-11-23 22:36:32,783 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places.
[2024-11-23 22:36:32,783 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 560 flow
[2024-11-23 22:36:32,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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)
[2024-11-23 22:36:32,783 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:32,783 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1]
[2024-11-23 22:36:32,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-23 22:36:32,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2024-11-23 22:36:32,988 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:32,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:32,988 INFO L85 PathProgramCache]: Analyzing trace with hash -175584974, now seen corresponding path program 3 times
[2024-11-23 22:36:32,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:32,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801376867]
[2024-11-23 22:36:32,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 22:36:32,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:33,012 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-23 22:36:33,012 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:36:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2024-11-23 22:36:33,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:33,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801376867]
[2024-11-23 22:36:33,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801376867] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:33,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819479052]
[2024-11-23 22:36:33,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 22:36:33,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:33,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:33,333 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:33,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-23 22:36:33,453 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-23 22:36:33,454 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:36:33,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:33,458 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:33,475 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
[2024-11-23 22:36:33,600 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size
[2024-11-23 22:36:33,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 22
[2024-11-23 22:36:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2024-11-23 22:36:33,732 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2024-11-23 22:36:33,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819479052] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:36:33,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:36:33,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15
[2024-11-23 22:36:33,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928111105]
[2024-11-23 22:36:33,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:36:33,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-11-23 22:36:33,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:33,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-11-23 22:36:33,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272
[2024-11-23 22:36:34,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:34,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 560 flow. Second operand has 17 states, 17 states have (on average 16.764705882352942) internal successors, (285), 17 states have internal predecessors, (285), 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)
[2024-11-23 22:36:34,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:34,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:34,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:35,803 INFO L124 PetriNetUnfolderBase]: 7976/12521 cut-off events.
[2024-11-23 22:36:35,804 INFO L125 PetriNetUnfolderBase]: For 15881/16769 co-relation queries the response was YES.
[2024-11-23 22:36:35,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35776 conditions, 12521 events. 7976/12521 cut-off events. For 15881/16769 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 81962 event pairs, 6074 based on Foata normal form. 2/10954 useless extension candidates. Maximal degree in co-relation 35730. Up to 11024 conditions per place.
[2024-11-23 22:36:35,883 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 41 selfloop transitions, 36 changer transitions 0/88 dead transitions.
[2024-11-23 22:36:35,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 88 transitions, 712 flow
[2024-11-23 22:36:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-23 22:36:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-23 22:36:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions.
[2024-11-23 22:36:35,885 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37343358395989973
[2024-11-23 22:36:35,885 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 560 flow. Second operand 7 states and 149 transitions.
[2024-11-23 22:36:35,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 88 transitions, 712 flow
[2024-11-23 22:36:35,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 88 transitions, 648 flow, removed 1 selfloop flow, removed 10 redundant places.
[2024-11-23 22:36:35,904 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 598 flow
[2024-11-23 22:36:35,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=598, PETRI_PLACES=99, PETRI_TRANSITIONS=88}
[2024-11-23 22:36:35,905 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 42 predicate places.
[2024-11-23 22:36:35,905 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 598 flow
[2024-11-23 22:36:35,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.764705882352942) internal successors, (285), 17 states have internal predecessors, (285), 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)
[2024-11-23 22:36:35,906 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:35,906 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:35,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-23 22:36:36,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:36,110 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:36,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:36,110 INFO L85 PathProgramCache]: Analyzing trace with hash 783226647, now seen corresponding path program 1 times
[2024-11-23 22:36:36,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:36,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659789061]
[2024-11-23 22:36:36,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:36,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:36:36,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:36,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659789061]
[2024-11-23 22:36:36,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659789061] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:36,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575694929]
[2024-11-23 22:36:36,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:36,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:36,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:36,356 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:36,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-23 22:36:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:36,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:36,445 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:36:36,546 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:36,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18
[2024-11-23 22:36:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:36:36,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575694929] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:36:36,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:36:36,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2024-11-23 22:36:36,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598690279]
[2024-11-23 22:36:36,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:36:36,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-23 22:36:36,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:36,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-23 22:36:36,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2024-11-23 22:36:36,711 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57
[2024-11-23 22:36:36,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 598 flow. Second operand has 11 states, 11 states have (on average 19.363636363636363) internal successors, (213), 11 states have internal predecessors, (213), 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)
[2024-11-23 22:36:36,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:36,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57
[2024-11-23 22:36:36,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:37,805 INFO L124 PetriNetUnfolderBase]: 7664/12356 cut-off events.
[2024-11-23 22:36:37,805 INFO L125 PetriNetUnfolderBase]: For 16203/17283 co-relation queries the response was YES.
[2024-11-23 22:36:37,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35095 conditions, 12356 events. 7664/12356 cut-off events. For 16203/17283 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 82731 event pairs, 3791 based on Foata normal form. 0/11004 useless extension candidates. Maximal degree in co-relation 34938. Up to 7024 conditions per place.
[2024-11-23 22:36:37,882 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 103 selfloop transitions, 24 changer transitions 0/138 dead transitions.
[2024-11-23 22:36:37,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 138 transitions, 1030 flow
[2024-11-23 22:36:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-23 22:36:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-23 22:36:37,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions.
[2024-11-23 22:36:37,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5338345864661654
[2024-11-23 22:36:37,883 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 598 flow. Second operand 7 states and 213 transitions.
[2024-11-23 22:36:37,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 138 transitions, 1030 flow
[2024-11-23 22:36:37,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 1009 flow, removed 3 selfloop flow, removed 3 redundant places.
[2024-11-23 22:36:37,904 INFO L231 Difference]: Finished difference. Result has 104 places, 90 transitions, 652 flow
[2024-11-23 22:36:37,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=652, PETRI_PLACES=104, PETRI_TRANSITIONS=90}
[2024-11-23 22:36:37,905 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 47 predicate places.
[2024-11-23 22:36:37,905 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 90 transitions, 652 flow
[2024-11-23 22:36:37,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.363636363636363) internal successors, (213), 11 states have internal predecessors, (213), 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)
[2024-11-23 22:36:37,905 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:37,905 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:37,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2024-11-23 22:36:38,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:38,106 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:38,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:38,107 INFO L85 PathProgramCache]: Analyzing trace with hash 783226646, now seen corresponding path program 1 times
[2024-11-23 22:36:38,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:38,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530383333]
[2024-11-23 22:36:38,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:38,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:36:38,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:38,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530383333]
[2024-11-23 22:36:38,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530383333] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:38,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:38,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 22:36:38,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152570208]
[2024-11-23 22:36:38,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:38,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 22:36:38,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:38,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 22:36:38,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 22:36:38,176 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:38,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 90 transitions, 652 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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)
[2024-11-23 22:36:38,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:38,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:38,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:38,993 INFO L124 PetriNetUnfolderBase]: 5879/9725 cut-off events.
[2024-11-23 22:36:38,993 INFO L125 PetriNetUnfolderBase]: For 17247/17871 co-relation queries the response was YES.
[2024-11-23 22:36:39,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30428 conditions, 9725 events. 5879/9725 cut-off events. For 17247/17871 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 64499 event pairs, 4358 based on Foata normal form. 384/9740 useless extension candidates. Maximal degree in co-relation 30266. Up to 8345 conditions per place.
[2024-11-23 22:36:39,052 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 65 selfloop transitions, 12 changer transitions 0/88 dead transitions.
[2024-11-23 22:36:39,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 88 transitions, 802 flow
[2024-11-23 22:36:39,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 22:36:39,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-23 22:36:39,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions.
[2024-11-23 22:36:39,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735
[2024-11-23 22:36:39,054 INFO L175 Difference]: Start difference. First operand has 104 places, 90 transitions, 652 flow. Second operand 4 states and 96 transitions.
[2024-11-23 22:36:39,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 88 transitions, 802 flow
[2024-11-23 22:36:39,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 88 transitions, 766 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-11-23 22:36:39,071 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 636 flow
[2024-11-23 22:36:39,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=636, PETRI_PLACES=101, PETRI_TRANSITIONS=88}
[2024-11-23 22:36:39,072 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places.
[2024-11-23 22:36:39,072 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 636 flow
[2024-11-23 22:36:39,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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)
[2024-11-23 22:36:39,072 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:39,072 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:39,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2024-11-23 22:36:39,072 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:39,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1844290421, now seen corresponding path program 1 times
[2024-11-23 22:36:39,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:39,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134823376]
[2024-11-23 22:36:39,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:39,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:36:39,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:39,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134823376]
[2024-11-23 22:36:39,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134823376] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:39,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081001587]
[2024-11-23 22:36:39,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:39,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:39,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:39,190 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:39,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-23 22:36:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:39,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:39,274 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:36:39,365 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:36:39,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081001587] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:36:39,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:36:39,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13
[2024-11-23 22:36:39,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266483740]
[2024-11-23 22:36:39,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:36:39,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-23 22:36:39,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:39,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-23 22:36:39,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182
[2024-11-23 22:36:39,503 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57
[2024-11-23 22:36:39,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 636 flow. Second operand has 14 states, 14 states have (on average 18.214285714285715) internal successors, (255), 14 states have internal predecessors, (255), 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)
[2024-11-23 22:36:39,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:39,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57
[2024-11-23 22:36:39,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:40,794 INFO L124 PetriNetUnfolderBase]: 6455/10189 cut-off events.
[2024-11-23 22:36:40,794 INFO L125 PetriNetUnfolderBase]: For 13540/13792 co-relation queries the response was YES.
[2024-11-23 22:36:40,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31389 conditions, 10189 events. 6455/10189 cut-off events. For 13540/13792 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 63309 event pairs, 3023 based on Foata normal form. 244/9976 useless extension candidates. Maximal degree in co-relation 31225. Up to 3505 conditions per place.
[2024-11-23 22:36:40,861 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 121 selfloop transitions, 36 changer transitions 0/167 dead transitions.
[2024-11-23 22:36:40,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 167 transitions, 1305 flow
[2024-11-23 22:36:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-23 22:36:40,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-11-23 22:36:40,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions.
[2024-11-23 22:36:40,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4807017543859649
[2024-11-23 22:36:40,864 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 636 flow. Second operand 10 states and 274 transitions.
[2024-11-23 22:36:40,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 167 transitions, 1305 flow
[2024-11-23 22:36:40,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 167 transitions, 1292 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-23 22:36:40,880 INFO L231 Difference]: Finished difference. Result has 111 places, 92 transitions, 750 flow
[2024-11-23 22:36:40,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=750, PETRI_PLACES=111, PETRI_TRANSITIONS=92}
[2024-11-23 22:36:40,881 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 54 predicate places.
[2024-11-23 22:36:40,881 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 92 transitions, 750 flow
[2024-11-23 22:36:40,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.214285714285715) internal successors, (255), 14 states have internal predecessors, (255), 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)
[2024-11-23 22:36:40,881 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:40,881 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:40,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-23 22:36:41,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-11-23 22:36:41,082 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:41,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1843759578, now seen corresponding path program 2 times
[2024-11-23 22:36:41,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:41,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933609294]
[2024-11-23 22:36:41,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:36:41,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:41,117 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:36:41,117 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:36:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:36:41,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:41,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933609294]
[2024-11-23 22:36:41,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933609294] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:41,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794180667]
[2024-11-23 22:36:41,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:36:41,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:41,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:41,541 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:41,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-23 22:36:41,683 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:36:41,683 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:36:41,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:41,687 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:41,701 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
[2024-11-23 22:36:41,820 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-23 22:36:41,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-11-23 22:36:41,831 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-23 22:36:41,831 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
[2024-11-23 22:36:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:36:41,986 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:42,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48
[2024-11-23 22:36:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:36:42,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794180667] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:36:42,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:36:42,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19
[2024-11-23 22:36:42,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359148111]
[2024-11-23 22:36:42,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:36:42,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-11-23 22:36:42,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:42,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-11-23 22:36:42,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420
[2024-11-23 22:36:43,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57
[2024-11-23 22:36:43,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 92 transitions, 750 flow. Second operand has 21 states, 21 states have (on average 16.285714285714285) internal successors, (342), 21 states have internal predecessors, (342), 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)
[2024-11-23 22:36:43,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:43,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57
[2024-11-23 22:36:43,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:45,903 INFO L124 PetriNetUnfolderBase]: 7285/11270 cut-off events.
[2024-11-23 22:36:45,903 INFO L125 PetriNetUnfolderBase]: For 21398/21660 co-relation queries the response was YES.
[2024-11-23 22:36:45,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39253 conditions, 11270 events. 7285/11270 cut-off events. For 21398/21660 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 69404 event pairs, 1780 based on Foata normal form. 244/11077 useless extension candidates. Maximal degree in co-relation 39071. Up to 2429 conditions per place.
[2024-11-23 22:36:45,959 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 238 selfloop transitions, 44 changer transitions 0/292 dead transitions.
[2024-11-23 22:36:45,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 292 transitions, 2258 flow
[2024-11-23 22:36:45,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-11-23 22:36:45,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2024-11-23 22:36:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 473 transitions.
[2024-11-23 22:36:45,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43674976915974145
[2024-11-23 22:36:45,962 INFO L175 Difference]: Start difference. First operand has 111 places, 92 transitions, 750 flow. Second operand 19 states and 473 transitions.
[2024-11-23 22:36:45,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 292 transitions, 2258 flow
[2024-11-23 22:36:45,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 292 transitions, 2197 flow, removed 4 selfloop flow, removed 6 redundant places.
[2024-11-23 22:36:45,983 INFO L231 Difference]: Finished difference. Result has 124 places, 102 transitions, 882 flow
[2024-11-23 22:36:45,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=882, PETRI_PLACES=124, PETRI_TRANSITIONS=102}
[2024-11-23 22:36:45,983 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 67 predicate places.
[2024-11-23 22:36:45,983 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 102 transitions, 882 flow
[2024-11-23 22:36:45,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 16.285714285714285) internal successors, (342), 21 states have internal predecessors, (342), 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)
[2024-11-23 22:36:45,984 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:45,984 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:45,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-11-23 22:36:46,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-11-23 22:36:46,184 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:46,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:46,185 INFO L85 PathProgramCache]: Analyzing trace with hash 745919440, now seen corresponding path program 1 times
[2024-11-23 22:36:46,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:46,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294022244]
[2024-11-23 22:36:46,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:46,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:36:46,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:46,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294022244]
[2024-11-23 22:36:46,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294022244] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:46,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244066902]
[2024-11-23 22:36:46,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:46,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:46,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:46,288 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:46,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-23 22:36:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:46,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:46,383 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:36:46,474 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:36:46,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244066902] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:36:46,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:36:46,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13
[2024-11-23 22:36:46,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648242698]
[2024-11-23 22:36:46,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:36:46,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-23 22:36:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:46,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-23 22:36:46,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182
[2024-11-23 22:36:46,633 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57
[2024-11-23 22:36:46,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 102 transitions, 882 flow. Second operand has 14 states, 14 states have (on average 18.571428571428573) internal successors, (260), 14 states have internal predecessors, (260), 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)
[2024-11-23 22:36:46,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:46,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57
[2024-11-23 22:36:46,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:47,510 INFO L124 PetriNetUnfolderBase]: 5136/8238 cut-off events.
[2024-11-23 22:36:47,510 INFO L125 PetriNetUnfolderBase]: For 28996/29688 co-relation queries the response was YES.
[2024-11-23 22:36:47,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30420 conditions, 8238 events. 5136/8238 cut-off events. For 28996/29688 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 48378 event pairs, 2951 based on Foata normal form. 130/8113 useless extension candidates. Maximal degree in co-relation 30241. Up to 4218 conditions per place.
[2024-11-23 22:36:47,557 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 119 selfloop transitions, 36 changer transitions 0/167 dead transitions.
[2024-11-23 22:36:47,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 167 transitions, 1579 flow
[2024-11-23 22:36:47,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-23 22:36:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-11-23 22:36:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions.
[2024-11-23 22:36:47,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4614035087719298
[2024-11-23 22:36:47,559 INFO L175 Difference]: Start difference. First operand has 124 places, 102 transitions, 882 flow. Second operand 10 states and 263 transitions.
[2024-11-23 22:36:47,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 167 transitions, 1579 flow
[2024-11-23 22:36:47,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 167 transitions, 1530 flow, removed 8 selfloop flow, removed 8 redundant places.
[2024-11-23 22:36:47,584 INFO L231 Difference]: Finished difference. Result has 128 places, 106 transitions, 969 flow
[2024-11-23 22:36:47,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=969, PETRI_PLACES=128, PETRI_TRANSITIONS=106}
[2024-11-23 22:36:47,585 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 71 predicate places.
[2024-11-23 22:36:47,585 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 106 transitions, 969 flow
[2024-11-23 22:36:47,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.571428571428573) internal successors, (260), 14 states have internal predecessors, (260), 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)
[2024-11-23 22:36:47,585 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:47,585 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:47,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-23 22:36:47,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:47,785 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:47,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1212695421, now seen corresponding path program 1 times
[2024-11-23 22:36:47,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:47,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080514231]
[2024-11-23 22:36:47,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:47,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:47,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080514231]
[2024-11-23 22:36:47,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080514231] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:47,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:47,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 22:36:47,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387365640]
[2024-11-23 22:36:47,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:47,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 22:36:47,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:47,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 22:36:47,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-23 22:36:47,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57
[2024-11-23 22:36:47,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 106 transitions, 969 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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)
[2024-11-23 22:36:47,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:47,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57
[2024-11-23 22:36:47,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:48,883 INFO L124 PetriNetUnfolderBase]: 5083/8225 cut-off events.
[2024-11-23 22:36:48,883 INFO L125 PetriNetUnfolderBase]: For 32935/33493 co-relation queries the response was YES.
[2024-11-23 22:36:48,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31954 conditions, 8225 events. 5083/8225 cut-off events. For 32935/33493 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 49240 event pairs, 3930 based on Foata normal form. 1/7933 useless extension candidates. Maximal degree in co-relation 31759. Up to 7116 conditions per place.
[2024-11-23 22:36:48,922 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 90 selfloop transitions, 2 changer transitions 17/121 dead transitions.
[2024-11-23 22:36:48,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 121 transitions, 1261 flow
[2024-11-23 22:36:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-23 22:36:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-23 22:36:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions.
[2024-11-23 22:36:48,923 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229
[2024-11-23 22:36:48,923 INFO L175 Difference]: Start difference. First operand has 128 places, 106 transitions, 969 flow. Second operand 4 states and 118 transitions.
[2024-11-23 22:36:48,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 121 transitions, 1261 flow
[2024-11-23 22:36:48,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 121 transitions, 1204 flow, removed 2 selfloop flow, removed 6 redundant places.
[2024-11-23 22:36:48,960 INFO L231 Difference]: Finished difference. Result has 126 places, 104 transitions, 897 flow
[2024-11-23 22:36:48,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=897, PETRI_PLACES=126, PETRI_TRANSITIONS=104}
[2024-11-23 22:36:48,961 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 69 predicate places.
[2024-11-23 22:36:48,961 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 104 transitions, 897 flow
[2024-11-23 22:36:48,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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)
[2024-11-23 22:36:48,961 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:48,962 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]
[2024-11-23 22:36:48,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2024-11-23 22:36:48,962 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:48,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:48,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1491312062, now seen corresponding path program 1 times
[2024-11-23 22:36:48,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:48,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966080716]
[2024-11-23 22:36:48,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:48,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-23 22:36:49,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:49,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966080716]
[2024-11-23 22:36:49,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966080716] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:49,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:49,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 22:36:49,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79412929]
[2024-11-23 22:36:49,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:49,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 22:36:49,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:49,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 22:36:49,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-23 22:36:49,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:49,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 104 transitions, 897 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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)
[2024-11-23 22:36:49,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:49,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:49,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:50,197 INFO L124 PetriNetUnfolderBase]: 7486/11776 cut-off events.
[2024-11-23 22:36:50,197 INFO L125 PetriNetUnfolderBase]: For 45289/46233 co-relation queries the response was YES.
[2024-11-23 22:36:50,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45090 conditions, 11776 events. 7486/11776 cut-off events. For 45289/46233 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 72370 event pairs, 2382 based on Foata normal form. 266/11789 useless extension candidates. Maximal degree in co-relation 45046. Up to 5787 conditions per place.
[2024-11-23 22:36:50,300 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 195 selfloop transitions, 20 changer transitions 0/224 dead transitions.
[2024-11-23 22:36:50,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 224 transitions, 2302 flow
[2024-11-23 22:36:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 22:36:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-23 22:36:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions.
[2024-11-23 22:36:50,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543859649122807
[2024-11-23 22:36:50,301 INFO L175 Difference]: Start difference. First operand has 126 places, 104 transitions, 897 flow. Second operand 6 states and 186 transitions.
[2024-11-23 22:36:50,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 224 transitions, 2302 flow
[2024-11-23 22:36:50,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 224 transitions, 2292 flow, removed 3 selfloop flow, removed 4 redundant places.
[2024-11-23 22:36:50,343 INFO L231 Difference]: Finished difference. Result has 129 places, 116 transitions, 1075 flow
[2024-11-23 22:36:50,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1075, PETRI_PLACES=129, PETRI_TRANSITIONS=116}
[2024-11-23 22:36:50,343 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 72 predicate places.
[2024-11-23 22:36:50,343 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 1075 flow
[2024-11-23 22:36:50,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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)
[2024-11-23 22:36:50,344 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:50,344 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]
[2024-11-23 22:36:50,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2024-11-23 22:36:50,344 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:50,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1954082418, now seen corresponding path program 2 times
[2024-11-23 22:36:50,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:50,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262958018]
[2024-11-23 22:36:50,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:36:50,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:50,356 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-23 22:36:50,356 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:36:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-23 22:36:50,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:50,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262958018]
[2024-11-23 22:36:50,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262958018] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:50,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:50,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 22:36:50,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138433864]
[2024-11-23 22:36:50,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:50,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 22:36:50,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:50,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 22:36:50,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-23 22:36:50,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:50,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 1075 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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)
[2024-11-23 22:36:50,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:50,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:50,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:51,998 INFO L124 PetriNetUnfolderBase]: 10454/16428 cut-off events.
[2024-11-23 22:36:51,998 INFO L125 PetriNetUnfolderBase]: For 73975/75392 co-relation queries the response was YES.
[2024-11-23 22:36:52,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64672 conditions, 16428 events. 10454/16428 cut-off events. For 73975/75392 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 104659 event pairs, 3800 based on Foata normal form. 296/16292 useless extension candidates. Maximal degree in co-relation 64488. Up to 6400 conditions per place.
[2024-11-23 22:36:52,122 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 216 selfloop transitions, 16 changer transitions 0/241 dead transitions.
[2024-11-23 22:36:52,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 241 transitions, 2585 flow
[2024-11-23 22:36:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 22:36:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-23 22:36:52,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions.
[2024-11-23 22:36:52,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327
[2024-11-23 22:36:52,124 INFO L175 Difference]: Start difference. First operand has 129 places, 116 transitions, 1075 flow. Second operand 6 states and 184 transitions.
[2024-11-23 22:36:52,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 241 transitions, 2585 flow
[2024-11-23 22:36:52,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 241 transitions, 2561 flow, removed 1 selfloop flow, removed 1 redundant places.
[2024-11-23 22:36:52,200 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 1261 flow
[2024-11-23 22:36:52,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1261, PETRI_PLACES=137, PETRI_TRANSITIONS=126}
[2024-11-23 22:36:52,200 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 80 predicate places.
[2024-11-23 22:36:52,200 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 1261 flow
[2024-11-23 22:36:52,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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)
[2024-11-23 22:36:52,201 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:52,201 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]
[2024-11-23 22:36:52,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2024-11-23 22:36:52,201 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:52,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:52,201 INFO L85 PathProgramCache]: Analyzing trace with hash -716747236, now seen corresponding path program 3 times
[2024-11-23 22:36:52,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:52,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221218951]
[2024-11-23 22:36:52,201 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 22:36:52,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:52,209 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s)
[2024-11-23 22:36:52,209 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:36:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-23 22:36:52,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:52,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221218951]
[2024-11-23 22:36:52,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221218951] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:36:52,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:36:52,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 22:36:52,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904472867]
[2024-11-23 22:36:52,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:52,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 22:36:52,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:52,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 22:36:52,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-23 22:36:52,260 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57
[2024-11-23 22:36:52,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 1261 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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)
[2024-11-23 22:36:52,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:52,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57
[2024-11-23 22:36:52,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:54,194 INFO L124 PetriNetUnfolderBase]: 9892/15573 cut-off events.
[2024-11-23 22:36:54,194 INFO L125 PetriNetUnfolderBase]: For 75565/77213 co-relation queries the response was YES.
[2024-11-23 22:36:54,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61391 conditions, 15573 events. 9892/15573 cut-off events. For 75565/77213 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 95241 event pairs, 1901 based on Foata normal form. 266/15596 useless extension candidates. Maximal degree in co-relation 61203. Up to 5377 conditions per place.
[2024-11-23 22:36:54,352 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 190 selfloop transitions, 32 changer transitions 0/231 dead transitions.
[2024-11-23 22:36:54,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 231 transitions, 2552 flow
[2024-11-23 22:36:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 22:36:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-23 22:36:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions.
[2024-11-23 22:36:54,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543859649122807
[2024-11-23 22:36:54,354 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 1261 flow. Second operand 6 states and 186 transitions.
[2024-11-23 22:36:54,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 231 transitions, 2552 flow
[2024-11-23 22:36:54,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 231 transitions, 2528 flow, removed 5 selfloop flow, removed 2 redundant places.
[2024-11-23 22:36:54,439 INFO L231 Difference]: Finished difference. Result has 143 places, 128 transitions, 1374 flow
[2024-11-23 22:36:54,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1374, PETRI_PLACES=143, PETRI_TRANSITIONS=128}
[2024-11-23 22:36:54,439 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 86 predicate places.
[2024-11-23 22:36:54,439 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 1374 flow
[2024-11-23 22:36:54,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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)
[2024-11-23 22:36:54,440 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:54,440 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]
[2024-11-23 22:36:54,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2024-11-23 22:36:54,440 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:54,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1663302193, now seen corresponding path program 1 times
[2024-11-23 22:36:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:54,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353638378]
[2024-11-23 22:36:54,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:54,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 22:36:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353638378]
[2024-11-23 22:36:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353638378] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767812744]
[2024-11-23 22:36:54,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:36:54,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:54,541 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:54,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-23 22:36:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:36:54,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:54,638 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-23 22:36:54,668 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-23 22:36:54,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767812744] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:54,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-23 22:36:54,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9
[2024-11-23 22:36:54,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241698670]
[2024-11-23 22:36:54,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:36:54,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 22:36:54,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:54,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 22:36:54,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-23 22:36:54,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57
[2024-11-23 22:36:54,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 128 transitions, 1374 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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)
[2024-11-23 22:36:54,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:54,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57
[2024-11-23 22:36:54,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:36:56,081 INFO L124 PetriNetUnfolderBase]: 8108/13012 cut-off events.
[2024-11-23 22:36:56,081 INFO L125 PetriNetUnfolderBase]: For 71411/72609 co-relation queries the response was YES.
[2024-11-23 22:36:56,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53222 conditions, 13012 events. 8108/13012 cut-off events. For 71411/72609 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 81823 event pairs, 6080 based on Foata normal form. 15/12601 useless extension candidates. Maximal degree in co-relation 53044. Up to 11135 conditions per place.
[2024-11-23 22:36:56,180 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 73 selfloop transitions, 25 changer transitions 0/116 dead transitions.
[2024-11-23 22:36:56,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 116 transitions, 1394 flow
[2024-11-23 22:36:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 22:36:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-23 22:36:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions.
[2024-11-23 22:36:56,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4245614035087719
[2024-11-23 22:36:56,182 INFO L175 Difference]: Start difference. First operand has 143 places, 128 transitions, 1374 flow. Second operand 5 states and 121 transitions.
[2024-11-23 22:36:56,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 116 transitions, 1394 flow
[2024-11-23 22:36:56,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 116 transitions, 1276 flow, removed 26 selfloop flow, removed 8 redundant places.
[2024-11-23 22:36:56,261 INFO L231 Difference]: Finished difference. Result has 135 places, 116 transitions, 1130 flow
[2024-11-23 22:36:56,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1130, PETRI_PLACES=135, PETRI_TRANSITIONS=116}
[2024-11-23 22:36:56,262 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 78 predicate places.
[2024-11-23 22:36:56,262 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 116 transitions, 1130 flow
[2024-11-23 22:36:56,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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)
[2024-11-23 22:36:56,262 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:36:56,262 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:36:56,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2024-11-23 22:36:56,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2024-11-23 22:36:56,463 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:36:56,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:36:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1267075007, now seen corresponding path program 2 times
[2024-11-23 22:36:56,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:36:56,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117198151]
[2024-11-23 22:36:56,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:36:56,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:36:56,480 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:36:56,480 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:36:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:36:56,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:36:56,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117198151]
[2024-11-23 22:36:56,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117198151] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:36:56,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13476798]
[2024-11-23 22:36:56,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:36:56,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:36:56,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:36:56,851 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:36:56,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-23 22:36:56,936 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:36:56,937 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:36:56,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 34 conjuncts are in the unsatisfiable core
[2024-11-23 22:36:56,940 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:36:56,948 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
[2024-11-23 22:36:57,076 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size
[2024-11-23 22:36:57,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21
[2024-11-23 22:36:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:36:57,523 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:36:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:36:57,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13476798] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:36:57,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:36:57,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 22
[2024-11-23 22:36:57,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010679736]
[2024-11-23 22:36:57,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:36:57,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-23 22:36:57,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:36:57,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-23 22:36:57,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552
[2024-11-23 22:36:58,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 57
[2024-11-23 22:36:58,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 116 transitions, 1130 flow. Second operand has 24 states, 24 states have (on average 14.375) internal successors, (345), 24 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 22:36:58,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:36:58,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 57
[2024-11-23 22:36:58,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:37:02,187 INFO L124 PetriNetUnfolderBase]: 8756/14001 cut-off events.
[2024-11-23 22:37:02,187 INFO L125 PetriNetUnfolderBase]: For 48413/48745 co-relation queries the response was YES.
[2024-11-23 22:37:02,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52733 conditions, 14001 events. 8756/14001 cut-off events. For 48413/48745 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 87460 event pairs, 1298 based on Foata normal form. 304/13993 useless extension candidates. Maximal degree in co-relation 52544. Up to 2783 conditions per place.
[2024-11-23 22:37:02,284 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 221 selfloop transitions, 55 changer transitions 0/293 dead transitions.
[2024-11-23 22:37:02,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 293 transitions, 2830 flow
[2024-11-23 22:37:02,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2024-11-23 22:37:02,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2024-11-23 22:37:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 433 transitions.
[2024-11-23 22:37:02,286 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3617376775271512
[2024-11-23 22:37:02,286 INFO L175 Difference]: Start difference. First operand has 135 places, 116 transitions, 1130 flow. Second operand 21 states and 433 transitions.
[2024-11-23 22:37:02,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 293 transitions, 2830 flow
[2024-11-23 22:37:02,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 293 transitions, 2774 flow, removed 1 selfloop flow, removed 5 redundant places.
[2024-11-23 22:37:02,412 INFO L231 Difference]: Finished difference. Result has 151 places, 130 transitions, 1382 flow
[2024-11-23 22:37:02,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1382, PETRI_PLACES=151, PETRI_TRANSITIONS=130}
[2024-11-23 22:37:02,413 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 94 predicate places.
[2024-11-23 22:37:02,413 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 130 transitions, 1382 flow
[2024-11-23 22:37:02,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.375) internal successors, (345), 24 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-23 22:37:02,413 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:37:02,413 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:37:02,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-11-23 22:37:02,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2024-11-23 22:37:02,614 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:37:02,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:37:02,614 INFO L85 PathProgramCache]: Analyzing trace with hash 624620098, now seen corresponding path program 1 times
[2024-11-23 22:37:02,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:37:02,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724318864]
[2024-11-23 22:37:02,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:02,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:37:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-23 22:37:02,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:37:02,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724318864]
[2024-11-23 22:37:02,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724318864] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:37:02,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509690289]
[2024-11-23 22:37:02,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:02,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:37:02,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:37:02,903 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:37:02,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-23 22:37:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:03,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-11-23 22:37:03,015 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:37:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-23 22:37:03,231 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:37:03,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20
[2024-11-23 22:37:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-23 22:37:03,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509690289] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:37:03,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:37:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21
[2024-11-23 22:37:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262915798]
[2024-11-23 22:37:03,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:37:03,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-11-23 22:37:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:37:03,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-11-23 22:37:03,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462
[2024-11-23 22:37:03,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57
[2024-11-23 22:37:03,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 130 transitions, 1382 flow. Second operand has 22 states, 22 states have (on average 18.636363636363637) internal successors, (410), 22 states have internal predecessors, (410), 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)
[2024-11-23 22:37:03,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:37:03,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57
[2024-11-23 22:37:03,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:37:05,799 INFO L124 PetriNetUnfolderBase]: 7623/12164 cut-off events.
[2024-11-23 22:37:05,799 INFO L125 PetriNetUnfolderBase]: For 53640/53952 co-relation queries the response was YES.
[2024-11-23 22:37:05,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47604 conditions, 12164 events. 7623/12164 cut-off events. For 53640/53952 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 74761 event pairs, 2424 based on Foata normal form. 523/12349 useless extension candidates. Maximal degree in co-relation 47421. Up to 3597 conditions per place.
[2024-11-23 22:37:05,899 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 145 selfloop transitions, 31 changer transitions 20/213 dead transitions.
[2024-11-23 22:37:05,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 213 transitions, 2176 flow
[2024-11-23 22:37:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-11-23 22:37:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2024-11-23 22:37:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 349 transitions.
[2024-11-23 22:37:05,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43734335839599
[2024-11-23 22:37:05,900 INFO L175 Difference]: Start difference. First operand has 151 places, 130 transitions, 1382 flow. Second operand 14 states and 349 transitions.
[2024-11-23 22:37:05,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 213 transitions, 2176 flow
[2024-11-23 22:37:05,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 213 transitions, 2094 flow, removed 6 selfloop flow, removed 11 redundant places.
[2024-11-23 22:37:06,000 INFO L231 Difference]: Finished difference. Result has 155 places, 111 transitions, 1070 flow
[2024-11-23 22:37:06,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1070, PETRI_PLACES=155, PETRI_TRANSITIONS=111}
[2024-11-23 22:37:06,001 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 98 predicate places.
[2024-11-23 22:37:06,001 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 111 transitions, 1070 flow
[2024-11-23 22:37:06,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.636363636363637) internal successors, (410), 22 states have internal predecessors, (410), 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)
[2024-11-23 22:37:06,001 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:37:06,001 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]
[2024-11-23 22:37:06,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-11-23 22:37:06,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2024-11-23 22:37:06,202 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:37:06,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:37:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1084782368, now seen corresponding path program 1 times
[2024-11-23 22:37:06,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:37:06,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289685983]
[2024-11-23 22:37:06,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:37:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-23 22:37:06,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:37:06,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289685983]
[2024-11-23 22:37:06,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289685983] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:37:06,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676580343]
[2024-11-23 22:37:06,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:06,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:37:06,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:37:06,288 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:37:06,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-23 22:37:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:06,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-23 22:37:06,393 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:37:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:37:06,435 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:37:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:37:06,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676580343] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:37:06,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-23 22:37:06,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9
[2024-11-23 22:37:06,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996029106]
[2024-11-23 22:37:06,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:37:06,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 22:37:06,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:37:06,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 22:37:06,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2024-11-23 22:37:06,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57
[2024-11-23 22:37:06,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 111 transitions, 1070 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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)
[2024-11-23 22:37:06,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:37:06,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57
[2024-11-23 22:37:06,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:37:07,750 INFO L124 PetriNetUnfolderBase]: 7137/11091 cut-off events.
[2024-11-23 22:37:07,750 INFO L125 PetriNetUnfolderBase]: For 48271/48323 co-relation queries the response was YES.
[2024-11-23 22:37:07,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43834 conditions, 11091 events. 7137/11091 cut-off events. For 48271/48323 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 67113 event pairs, 2245 based on Foata normal form. 332/10717 useless extension candidates. Maximal degree in co-relation 43662. Up to 5907 conditions per place.
[2024-11-23 22:37:07,842 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 126 selfloop transitions, 10 changer transitions 0/152 dead transitions.
[2024-11-23 22:37:07,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 152 transitions, 1782 flow
[2024-11-23 22:37:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 22:37:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-23 22:37:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions.
[2024-11-23 22:37:07,843 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421
[2024-11-23 22:37:07,843 INFO L175 Difference]: Start difference. First operand has 155 places, 111 transitions, 1070 flow. Second operand 5 states and 132 transitions.
[2024-11-23 22:37:07,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 152 transitions, 1782 flow
[2024-11-23 22:37:07,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 152 transitions, 1569 flow, removed 14 selfloop flow, removed 22 redundant places.
[2024-11-23 22:37:07,928 INFO L231 Difference]: Finished difference. Result has 138 places, 110 transitions, 957 flow
[2024-11-23 22:37:07,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=957, PETRI_PLACES=138, PETRI_TRANSITIONS=110}
[2024-11-23 22:37:07,928 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 81 predicate places.
[2024-11-23 22:37:07,929 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 110 transitions, 957 flow
[2024-11-23 22:37:07,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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)
[2024-11-23 22:37:07,929 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:37:07,929 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]
[2024-11-23 22:37:07,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2024-11-23 22:37:08,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2024-11-23 22:37:08,129 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:37:08,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:37:08,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1865880102, now seen corresponding path program 1 times
[2024-11-23 22:37:08,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:37:08,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985694520]
[2024-11-23 22:37:08,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:08,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:37:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:37:08,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:37:08,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985694520]
[2024-11-23 22:37:08,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985694520] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:37:08,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875442610]
[2024-11-23 22:37:08,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:08,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:37:08,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:37:08,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:37:08,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-23 22:37:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:08,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-23 22:37:08,324 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:37:08,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-23 22:37:08,378 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:37:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-23 22:37:08,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875442610] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:37:08,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-23 22:37:08,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9
[2024-11-23 22:37:08,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283936246]
[2024-11-23 22:37:08,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:37:08,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 22:37:08,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:37:08,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 22:37:08,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2024-11-23 22:37:08,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57
[2024-11-23 22:37:08,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 110 transitions, 957 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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)
[2024-11-23 22:37:08,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:37:08,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57
[2024-11-23 22:37:08,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:37:09,620 INFO L124 PetriNetUnfolderBase]: 6382/10519 cut-off events.
[2024-11-23 22:37:09,620 INFO L125 PetriNetUnfolderBase]: For 41050/41350 co-relation queries the response was YES.
[2024-11-23 22:37:09,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38227 conditions, 10519 events. 6382/10519 cut-off events. For 41050/41350 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 65305 event pairs, 1498 based on Foata normal form. 65/10108 useless extension candidates. Maximal degree in co-relation 38062. Up to 6116 conditions per place.
[2024-11-23 22:37:09,703 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 94 selfloop transitions, 18 changer transitions 0/130 dead transitions.
[2024-11-23 22:37:09,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 130 transitions, 1280 flow
[2024-11-23 22:37:09,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 22:37:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-23 22:37:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions.
[2024-11-23 22:37:09,704 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844
[2024-11-23 22:37:09,704 INFO L175 Difference]: Start difference. First operand has 138 places, 110 transitions, 957 flow. Second operand 5 states and 129 transitions.
[2024-11-23 22:37:09,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 130 transitions, 1280 flow
[2024-11-23 22:37:09,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 130 transitions, 1257 flow, removed 3 selfloop flow, removed 3 redundant places.
[2024-11-23 22:37:09,757 INFO L231 Difference]: Finished difference. Result has 140 places, 108 transitions, 959 flow
[2024-11-23 22:37:09,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=959, PETRI_PLACES=140, PETRI_TRANSITIONS=108}
[2024-11-23 22:37:09,758 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 83 predicate places.
[2024-11-23 22:37:09,758 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 108 transitions, 959 flow
[2024-11-23 22:37:09,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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)
[2024-11-23 22:37:09,758 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:37:09,758 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:37:09,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2024-11-23 22:37:09,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2024-11-23 22:37:09,959 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:37:09,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:37:09,959 INFO L85 PathProgramCache]: Analyzing trace with hash -605276356, now seen corresponding path program 2 times
[2024-11-23 22:37:09,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:37:09,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839579845]
[2024-11-23 22:37:09,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:37:09,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:37:09,976 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:37:09,976 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:37:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:37:10,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:37:10,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839579845]
[2024-11-23 22:37:10,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839579845] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:37:10,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780032274]
[2024-11-23 22:37:10,093 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:37:10,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:37:10,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:37:10,095 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:37:10,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-11-23 22:37:10,200 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:37:10,200 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:37:10,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-23 22:37:10,203 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:37:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:37:10,367 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:37:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-23 22:37:10,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780032274] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:37:10,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:37:10,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18
[2024-11-23 22:37:10,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241228828]
[2024-11-23 22:37:10,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:37:10,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-11-23 22:37:10,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:37:10,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-11-23 22:37:10,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342
[2024-11-23 22:37:10,623 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57
[2024-11-23 22:37:10,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 108 transitions, 959 flow. Second operand has 19 states, 19 states have (on average 18.68421052631579) internal successors, (355), 19 states have internal predecessors, (355), 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)
[2024-11-23 22:37:10,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:37:10,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57
[2024-11-23 22:37:10,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:37:12,878 INFO L124 PetriNetUnfolderBase]: 9945/16453 cut-off events.
[2024-11-23 22:37:12,878 INFO L125 PetriNetUnfolderBase]: For 72017/72505 co-relation queries the response was YES.
[2024-11-23 22:37:12,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61258 conditions, 16453 events. 9945/16453 cut-off events. For 72017/72505 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 109511 event pairs, 5094 based on Foata normal form. 173/16108 useless extension candidates. Maximal degree in co-relation 39214. Up to 7454 conditions per place.
[2024-11-23 22:37:12,991 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 151 selfloop transitions, 40 changer transitions 0/209 dead transitions.
[2024-11-23 22:37:12,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 209 transitions, 2007 flow
[2024-11-23 22:37:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-11-23 22:37:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2024-11-23 22:37:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 382 transitions.
[2024-11-23 22:37:12,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41885964912280704
[2024-11-23 22:37:12,992 INFO L175 Difference]: Start difference. First operand has 140 places, 108 transitions, 959 flow. Second operand 16 states and 382 transitions.
[2024-11-23 22:37:12,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 209 transitions, 2007 flow
[2024-11-23 22:37:13,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 209 transitions, 1972 flow, removed 4 selfloop flow, removed 3 redundant places.
[2024-11-23 22:37:13,130 INFO L231 Difference]: Finished difference. Result has 157 places, 117 transitions, 1209 flow
[2024-11-23 22:37:13,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1209, PETRI_PLACES=157, PETRI_TRANSITIONS=117}
[2024-11-23 22:37:13,131 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 100 predicate places.
[2024-11-23 22:37:13,131 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 117 transitions, 1209 flow
[2024-11-23 22:37:13,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.68421052631579) internal successors, (355), 19 states have internal predecessors, (355), 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)
[2024-11-23 22:37:13,131 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:37:13,131 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:37:13,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2024-11-23 22:37:13,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2024-11-23 22:37:13,332 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:37:13,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:37:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1593192651, now seen corresponding path program 1 times
[2024-11-23 22:37:13,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:37:13,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219098362]
[2024-11-23 22:37:13,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:37:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-23 22:37:13,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:37:13,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219098362]
[2024-11-23 22:37:13,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219098362] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:37:13,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262577773]
[2024-11-23 22:37:13,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:13,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:37:13,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:37:13,482 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:37:13,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-11-23 22:37:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:13,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-23 22:37:13,591 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:37:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-23 22:37:13,719 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:37:13,756 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 29 treesize of output 25
[2024-11-23 22:37:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-23 22:37:13,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262577773] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:37:13,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:37:13,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17
[2024-11-23 22:37:13,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424899129]
[2024-11-23 22:37:13,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:37:13,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-23 22:37:13,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:37:13,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-23 22:37:13,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306
[2024-11-23 22:37:14,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57
[2024-11-23 22:37:14,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 117 transitions, 1209 flow. Second operand has 18 states, 18 states have (on average 19.5) internal successors, (351), 18 states have internal predecessors, (351), 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)
[2024-11-23 22:37:14,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:37:14,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57
[2024-11-23 22:37:14,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:37:18,377 INFO L124 PetriNetUnfolderBase]: 19250/32167 cut-off events.
[2024-11-23 22:37:18,377 INFO L125 PetriNetUnfolderBase]: For 144184/145511 co-relation queries the response was YES.
[2024-11-23 22:37:18,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120322 conditions, 32167 events. 19250/32167 cut-off events. For 144184/145511 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 240707 event pairs, 2712 based on Foata normal form. 0/30706 useless extension candidates. Maximal degree in co-relation 76476. Up to 4590 conditions per place.
[2024-11-23 22:37:18,667 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 403 selfloop transitions, 83 changer transitions 0/507 dead transitions.
[2024-11-23 22:37:18,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 507 transitions, 4861 flow
[2024-11-23 22:37:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2024-11-23 22:37:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states.
[2024-11-23 22:37:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 681 transitions.
[2024-11-23 22:37:18,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5194508009153318
[2024-11-23 22:37:18,669 INFO L175 Difference]: Start difference. First operand has 157 places, 117 transitions, 1209 flow. Second operand 23 states and 681 transitions.
[2024-11-23 22:37:18,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 507 transitions, 4861 flow
[2024-11-23 22:37:19,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 507 transitions, 4846 flow, removed 1 selfloop flow, removed 3 redundant places.
[2024-11-23 22:37:19,160 INFO L231 Difference]: Finished difference. Result has 194 places, 191 transitions, 2263 flow
[2024-11-23 22:37:19,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2263, PETRI_PLACES=194, PETRI_TRANSITIONS=191}
[2024-11-23 22:37:19,161 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 137 predicate places.
[2024-11-23 22:37:19,161 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 191 transitions, 2263 flow
[2024-11-23 22:37:19,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.5) internal successors, (351), 18 states have internal predecessors, (351), 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)
[2024-11-23 22:37:19,162 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:37:19,162 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:37:19,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-11-23 22:37:19,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:37:19,362 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:37:19,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:37:19,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2076595833, now seen corresponding path program 2 times
[2024-11-23 22:37:19,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:37:19,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496526875]
[2024-11-23 22:37:19,363 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:37:19,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:37:19,376 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-23 22:37:19,376 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:37:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-23 22:37:19,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:37:19,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496526875]
[2024-11-23 22:37:19,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496526875] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 22:37:19,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 22:37:19,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 22:37:19,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888323993]
[2024-11-23 22:37:19,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:37:19,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 22:37:19,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:37:19,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 22:37:19,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-23 22:37:19,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57
[2024-11-23 22:37:19,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 191 transitions, 2263 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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)
[2024-11-23 22:37:19,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:37:19,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57
[2024-11-23 22:37:19,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:37:24,793 INFO L124 PetriNetUnfolderBase]: 19324/32065 cut-off events.
[2024-11-23 22:37:24,793 INFO L125 PetriNetUnfolderBase]: For 313588/316143 co-relation queries the response was YES.
[2024-11-23 22:37:25,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153100 conditions, 32065 events. 19324/32065 cut-off events. For 313588/316143 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 238414 event pairs, 3728 based on Foata normal form. 309/31485 useless extension candidates. Maximal degree in co-relation 128204. Up to 17859 conditions per place.
[2024-11-23 22:37:26,624 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 194 selfloop transitions, 21 changer transitions 0/236 dead transitions.
[2024-11-23 22:37:26,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 236 transitions, 3068 flow
[2024-11-23 22:37:26,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-23 22:37:26,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-23 22:37:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions.
[2024-11-23 22:37:26,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003
[2024-11-23 22:37:26,626 INFO L175 Difference]: Start difference. First operand has 194 places, 191 transitions, 2263 flow. Second operand 6 states and 164 transitions.
[2024-11-23 22:37:26,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 236 transitions, 3068 flow
[2024-11-23 22:37:28,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 236 transitions, 3027 flow, removed 6 selfloop flow, removed 4 redundant places.
[2024-11-23 22:37:28,210 INFO L231 Difference]: Finished difference. Result has 197 places, 194 transitions, 2328 flow
[2024-11-23 22:37:28,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2328, PETRI_PLACES=197, PETRI_TRANSITIONS=194}
[2024-11-23 22:37:28,211 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 140 predicate places.
[2024-11-23 22:37:28,211 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 194 transitions, 2328 flow
[2024-11-23 22:37:28,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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)
[2024-11-23 22:37:28,211 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:37:28,211 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, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:37:28,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30
[2024-11-23 22:37:28,212 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:37:28,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:37:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash -507423052, now seen corresponding path program 1 times
[2024-11-23 22:37:28,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:37:28,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210709815]
[2024-11-23 22:37:28,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:28,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:37:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-23 22:37:28,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:37:28,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210709815]
[2024-11-23 22:37:28,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210709815] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:37:28,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067155893]
[2024-11-23 22:37:28,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:28,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:37:28,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:37:28,328 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:37:28,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-11-23 22:37:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:28,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-23 22:37:28,460 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:37:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:37:28,523 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:37:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-23 22:37:28,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067155893] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:37:28,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2024-11-23 22:37:28,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9
[2024-11-23 22:37:28,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8532284]
[2024-11-23 22:37:28,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 22:37:28,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 22:37:28,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:37:28,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 22:37:28,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2024-11-23 22:37:28,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57
[2024-11-23 22:37:28,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 194 transitions, 2328 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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)
[2024-11-23 22:37:28,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:37:28,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57
[2024-11-23 22:37:28,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:37:35,238 INFO L124 PetriNetUnfolderBase]: 21241/34998 cut-off events.
[2024-11-23 22:37:35,238 INFO L125 PetriNetUnfolderBase]: For 338517/340713 co-relation queries the response was YES.
[2024-11-23 22:37:35,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164985 conditions, 34998 events. 21241/34998 cut-off events. For 338517/340713 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 259996 event pairs, 5849 based on Foata normal form. 34/33675 useless extension candidates. Maximal degree in co-relation 143354. Up to 19877 conditions per place.
[2024-11-23 22:37:35,959 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 173 selfloop transitions, 22 changer transitions 26/240 dead transitions.
[2024-11-23 22:37:35,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 240 transitions, 3291 flow
[2024-11-23 22:37:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-23 22:37:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-23 22:37:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions.
[2024-11-23 22:37:35,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844
[2024-11-23 22:37:35,961 INFO L175 Difference]: Start difference. First operand has 197 places, 194 transitions, 2328 flow. Second operand 5 states and 129 transitions.
[2024-11-23 22:37:35,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 240 transitions, 3291 flow
[2024-11-23 22:37:37,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 240 transitions, 3273 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-23 22:37:37,902 INFO L231 Difference]: Finished difference. Result has 200 places, 174 transitions, 2121 flow
[2024-11-23 22:37:37,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2121, PETRI_PLACES=200, PETRI_TRANSITIONS=174}
[2024-11-23 22:37:37,903 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 143 predicate places.
[2024-11-23 22:37:37,903 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 174 transitions, 2121 flow
[2024-11-23 22:37:37,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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)
[2024-11-23 22:37:37,903 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:37:37,903 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:37:37,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2024-11-23 22:37:38,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31
[2024-11-23 22:37:38,104 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:37:38,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:37:38,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1947761965, now seen corresponding path program 3 times
[2024-11-23 22:37:38,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:37:38,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126185465]
[2024-11-23 22:37:38,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 22:37:38,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:37:38,135 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-23 22:37:38,135 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:37:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2024-11-23 22:37:38,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:37:38,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126185465]
[2024-11-23 22:37:38,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126185465] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:37:38,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022794181]
[2024-11-23 22:37:38,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-23 22:37:38,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:37:38,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:37:38,428 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:37:38,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-11-23 22:37:38,566 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-23 22:37:38,566 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:37:38,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-23 22:37:38,575 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:37:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2024-11-23 22:37:39,003 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:37:39,672 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 50 treesize of output 46
[2024-11-23 22:37:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2024-11-23 22:37:39,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022794181] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:37:39,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:37:39,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20
[2024-11-23 22:37:39,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484654430]
[2024-11-23 22:37:39,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:37:39,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-11-23 22:37:39,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:37:39,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-11-23 22:37:39,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462
[2024-11-23 22:37:40,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57
[2024-11-23 22:37:40,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 174 transitions, 2121 flow. Second operand has 22 states, 22 states have (on average 18.863636363636363) internal successors, (415), 22 states have internal predecessors, (415), 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)
[2024-11-23 22:37:40,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:37:40,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57
[2024-11-23 22:37:40,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:37:46,435 INFO L124 PetriNetUnfolderBase]: 15970/26660 cut-off events.
[2024-11-23 22:37:46,436 INFO L125 PetriNetUnfolderBase]: For 293598/295504 co-relation queries the response was YES.
[2024-11-23 22:37:46,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135546 conditions, 26660 events. 15970/26660 cut-off events. For 293598/295504 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 197595 event pairs, 1821 based on Foata normal form. 810/27177 useless extension candidates. Maximal degree in co-relation 111106. Up to 11050 conditions per place.
[2024-11-23 22:37:46,784 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 166 selfloop transitions, 68 changer transitions 0/252 dead transitions.
[2024-11-23 22:37:46,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 252 transitions, 3228 flow
[2024-11-23 22:37:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-23 22:37:46,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-23 22:37:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions.
[2024-11-23 22:37:46,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333
[2024-11-23 22:37:46,794 INFO L175 Difference]: Start difference. First operand has 200 places, 174 transitions, 2121 flow. Second operand 8 states and 209 transitions.
[2024-11-23 22:37:46,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 252 transitions, 3228 flow
[2024-11-23 22:37:48,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 252 transitions, 3062 flow, removed 11 selfloop flow, removed 17 redundant places.
[2024-11-23 22:37:48,090 INFO L231 Difference]: Finished difference. Result has 177 places, 173 transitions, 2121 flow
[2024-11-23 22:37:48,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2121, PETRI_PLACES=177, PETRI_TRANSITIONS=173}
[2024-11-23 22:37:48,091 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 120 predicate places.
[2024-11-23 22:37:48,091 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 173 transitions, 2121 flow
[2024-11-23 22:37:48,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.863636363636363) internal successors, (415), 22 states have internal predecessors, (415), 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)
[2024-11-23 22:37:48,091 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:37:48,091 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:37:48,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2024-11-23 22:37:48,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:37:48,292 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:37:48,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:37:48,293 INFO L85 PathProgramCache]: Analyzing trace with hash 810100722, now seen corresponding path program 1 times
[2024-11-23 22:37:48,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:37:48,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341030838]
[2024-11-23 22:37:48,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:48,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:37:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-23 22:37:48,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:37:48,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341030838]
[2024-11-23 22:37:48,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341030838] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:37:48,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20400764]
[2024-11-23 22:37:48,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 22:37:48,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:37:48,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:37:48,416 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:37:48,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2024-11-23 22:37:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 22:37:48,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-23 22:37:48,565 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:37:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-23 22:37:48,656 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:37:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2024-11-23 22:37:48,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20400764] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:37:48,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:37:48,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13
[2024-11-23 22:37:48,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103628523]
[2024-11-23 22:37:48,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:37:48,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-23 22:37:48,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:37:48,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-23 22:37:48,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156
[2024-11-23 22:37:48,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57
[2024-11-23 22:37:48,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 173 transitions, 2121 flow. Second operand has 13 states, 13 states have (on average 17.53846153846154) internal successors, (228), 13 states have internal predecessors, (228), 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)
[2024-11-23 22:37:48,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:37:48,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57
[2024-11-23 22:37:48,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-23 22:38:01,296 INFO L124 PetriNetUnfolderBase]: 37225/58075 cut-off events.
[2024-11-23 22:38:01,296 INFO L125 PetriNetUnfolderBase]: For 579297/580077 co-relation queries the response was YES.
[2024-11-23 22:38:01,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272534 conditions, 58075 events. 37225/58075 cut-off events. For 579297/580077 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 436461 event pairs, 8012 based on Foata normal form. 2437/60435 useless extension candidates. Maximal degree in co-relation 245586. Up to 19713 conditions per place.
[2024-11-23 22:38:02,087 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 455 selfloop transitions, 96 changer transitions 26/588 dead transitions.
[2024-11-23 22:38:02,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 588 transitions, 6915 flow
[2024-11-23 22:38:02,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-11-23 22:38:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2024-11-23 22:38:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 606 transitions.
[2024-11-23 22:38:02,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644
[2024-11-23 22:38:02,090 INFO L175 Difference]: Start difference. First operand has 177 places, 173 transitions, 2121 flow. Second operand 22 states and 606 transitions.
[2024-11-23 22:38:02,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 588 transitions, 6915 flow
[2024-11-23 22:38:05,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 588 transitions, 6461 flow, removed 17 selfloop flow, removed 8 redundant places.
[2024-11-23 22:38:05,534 INFO L231 Difference]: Finished difference. Result has 210 places, 237 transitions, 3177 flow
[2024-11-23 22:38:05,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3177, PETRI_PLACES=210, PETRI_TRANSITIONS=237}
[2024-11-23 22:38:05,535 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 153 predicate places.
[2024-11-23 22:38:05,535 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 237 transitions, 3177 flow
[2024-11-23 22:38:05,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.53846153846154) internal successors, (228), 13 states have internal predecessors, (228), 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)
[2024-11-23 22:38:05,535 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-23 22:38:05,535 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 22:38:05,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2024-11-23 22:38:05,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:38:05,736 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2024-11-23 22:38:05,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 22:38:05,737 INFO L85 PathProgramCache]: Analyzing trace with hash -111428798, now seen corresponding path program 2 times
[2024-11-23 22:38:05,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 22:38:05,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627879002]
[2024-11-23 22:38:05,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:38:05,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 22:38:05,757 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:38:05,757 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:38:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-23 22:38:05,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 22:38:05,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627879002]
[2024-11-23 22:38:05,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627879002] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 22:38:05,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958010364]
[2024-11-23 22:38:05,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 22:38:05,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 22:38:05,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 22:38:05,936 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 22:38:05,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4f1fb7-6ee3-4e74-864e-ddb08d968760/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2024-11-23 22:38:06,070 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 22:38:06,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 22:38:06,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-23 22:38:06,074 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 22:38:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-23 22:38:06,288 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-23 22:38:06,569 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 7 treesize of output 5
[2024-11-23 22:38:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-23 22:38:06,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958010364] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-23 22:38:06,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-23 22:38:06,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19
[2024-11-23 22:38:06,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943376865]
[2024-11-23 22:38:06,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-23 22:38:06,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-11-23 22:38:06,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 22:38:06,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-11-23 22:38:06,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380
[2024-11-23 22:38:06,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57
[2024-11-23 22:38:06,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 237 transitions, 3177 flow. Second operand has 20 states, 20 states have (on average 16.85) internal successors, (337), 20 states have internal predecessors, (337), 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)
[2024-11-23 22:38:06,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-23 22:38:06,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57
[2024-11-23 22:38:06,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand