./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/bigshot_s2.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/bigshot_s2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1 --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 fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 15:50:09,301 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 15:50:09,352 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2024-12-02 15:50:09,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 15:50:09,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 15:50:09,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 15:50:09,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 15:50:09,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 15:50:09,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 15:50:09,379 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 15:50:09,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 15:50:09,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 15:50:09,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 15:50:09,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 15:50:09,380 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 15:50:09,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 15:50:09,380 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 15:50:09,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 15:50:09,380 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 15:50:09,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 15:50:09,380 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-12-02 15:50:09,380 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-12-02 15:50:09,381 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-12-02 15:50:09,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 15:50:09,381 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-12-02 15:50:09,381 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-12-02 15:50:09,381 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 15:50:09,381 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 15:50:09,381 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 15:50:09,381 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 15:50:09,381 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 15:50:09,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 15:50:09,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 15:50:09,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:50:09,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 15:50:09,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 15:50:09,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 15:50:09,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 15:50:09,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:50:09,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 15:50:09,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 15:50:09,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-12-02 15:50:09,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 15:50:09,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 15:50:09,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 15:50:09,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 15:50:09,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 15:50:09,383 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_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1
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 -> fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb
[2024-12-02 15:50:09,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 15:50:09,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 15:50:09,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 15:50:09,636 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 15:50:09,637 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 15:50:09,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/pthread/bigshot_s2.i
[2024-12-02 15:50:12,244 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/data/6dcddfbcb/ff15728329594ec5a34a8412830ff23a/FLAGb75194612
[2024-12-02 15:50:12,532 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 15:50:12,532 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/sv-benchmarks/c/pthread/bigshot_s2.i
[2024-12-02 15:50:12,547 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/data/6dcddfbcb/ff15728329594ec5a34a8412830ff23a/FLAGb75194612
[2024-12-02 15:50:12,830 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/data/6dcddfbcb/ff15728329594ec5a34a8412830ff23a
[2024-12-02 15:50:12,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 15:50:12,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 15:50:12,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 15:50:12,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 15:50:12,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 15:50:12,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:50:12" (1/1) ...
[2024-12-02 15:50:12,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1547fc00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:12, skipping insertion in model container
[2024-12-02 15:50:12,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:50:12" (1/1) ...
[2024-12-02 15:50:12,876 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 15:50:13,260 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 15:50:13,271 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 15:50:13,320 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 15:50:13,374 INFO L204 MainTranslator]: Completed translation
[2024-12-02 15:50:13,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13 WrapperNode
[2024-12-02 15:50:13,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 15:50:13,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 15:50:13,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 15:50:13,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 15:50:13,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,409 INFO L138 Inliner]: procedures = 322, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63
[2024-12-02 15:50:13,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 15:50:13,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 15:50:13,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 15:50:13,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 15:50:13,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,420 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,431 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 9, 2]. 69 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 1 writes are split as follows [0, 0, 1].
[2024-12-02 15:50:13,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,435 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 15:50:13,441 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 15:50:13,441 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 15:50:13,441 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 15:50:13,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (1/1) ...
[2024-12-02 15:50:13,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:50:13,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:13,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 15:50:13,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 15:50:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0
[2024-12-02 15:50:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1
[2024-12-02 15:50:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2
[2024-12-02 15:50:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-12-02 15:50:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-12-02 15:50:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-12-02 15:50:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2024-12-02 15:50:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2024-12-02 15:50:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2024-12-02 15:50:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2024-12-02 15:50:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-12-02 15:50:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 15:50:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-12-02 15:50:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-12-02 15:50:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-12-02 15:50:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 15:50:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 15:50:13,491 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-12-02 15:50:13,604 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 15:50:13,605 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 15:50:13,750 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-12-02 15:50:13,750 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 15:50:13,835 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 15:50:13,835 INFO L312 CfgBuilder]: Removed 1 assume(true) statements.
[2024-12-02 15:50:13,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:13 BoogieIcfgContainer
[2024-12-02 15:50:13,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 15:50:13,838 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 15:50:13,838 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 15:50:13,842 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 15:50:13,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:50:12" (1/3) ...
[2024-12-02 15:50:13,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca77da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:50:13, skipping insertion in model container
[2024-12-02 15:50:13,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:13" (2/3) ...
[2024-12-02 15:50:13,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca77da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:50:13, skipping insertion in model container
[2024-12-02 15:50:13,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:13" (3/3) ...
[2024-12-02 15:50:13,844 INFO L128 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i
[2024-12-02 15:50:13,859 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 15:50:13,860 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bigshot_s2.i that has 3 procedures, 39 locations, 1 initial locations, 1 loop locations, and 10 error locations.
[2024-12-02 15:50:13,860 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-12-02 15:50:13,911 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-12-02 15:50:13,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 100 flow
[2024-12-02 15:50:13,974 INFO L124 PetriNetUnfolderBase]: 5/41 cut-off events.
[2024-12-02 15:50:13,976 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-12-02 15:50:13,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 5/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place.
[2024-12-02 15:50:13,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 43 transitions, 100 flow
[2024-12-02 15:50:13,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 40 transitions, 92 flow
[2024-12-02 15:50:13,989 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 15:50:14,000 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;@75cbefc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 15:50:14,000 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations.
[2024-12-02 15:50:14,006 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-12-02 15:50:14,006 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events.
[2024-12-02 15:50:14,006 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-12-02 15:50:14,006 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:14,007 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:14,007 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:14,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:14,012 INFO L85 PathProgramCache]: Analyzing trace with hash -976161480, now seen corresponding path program 1 times
[2024-12-02 15:50:14,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:14,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005586506]
[2024-12-02 15:50:14,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:14,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:14,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:14,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:14,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005586506]
[2024-12-02 15:50:14,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005586506] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:14,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:14,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 15:50:14,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013594902]
[2024-12-02 15:50:14,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:14,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:50:14,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:14,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:50:14,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:50:14,420 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43
[2024-12-02 15:50:14,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 92 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)
[2024-12-02 15:50:14,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:14,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43
[2024-12-02 15:50:14,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:14,492 INFO L124 PetriNetUnfolderBase]: 10/56 cut-off events.
[2024-12-02 15:50:14,492 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-12-02 15:50:14,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 56 events. 10/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 3 based on Foata normal form. 2/49 useless extension candidates. Maximal degree in co-relation 79. Up to 23 conditions per place.
[2024-12-02 15:50:14,494 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 18 selfloop transitions, 3 changer transitions 0/35 dead transitions.
[2024-12-02 15:50:14,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 124 flow
[2024-12-02 15:50:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 15:50:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-12-02 15:50:14,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions.
[2024-12-02 15:50:14,504 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884
[2024-12-02 15:50:14,505 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 92 flow. Second operand 4 states and 90 transitions.
[2024-12-02 15:50:14,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 124 flow
[2024-12-02 15:50:14,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-12-02 15:50:14,511 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 78 flow
[2024-12-02 15:50:14,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=34}
[2024-12-02 15:50:14,516 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places.
[2024-12-02 15:50:14,516 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 78 flow
[2024-12-02 15:50:14,516 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)
[2024-12-02 15:50:14,517 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:14,517 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:14,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-12-02 15:50:14,517 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:14,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash -196234554, now seen corresponding path program 1 times
[2024-12-02 15:50:14,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:14,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852503179]
[2024-12-02 15:50:14,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:14,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:14,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852503179]
[2024-12-02 15:50:14,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852503179] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:14,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:14,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 15:50:14,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938974948]
[2024-12-02 15:50:14,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:14,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:50:14,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:14,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:50:14,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:50:14,778 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43
[2024-12-02 15:50:14,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 78 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)
[2024-12-02 15:50:14,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:14,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43
[2024-12-02 15:50:14,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:14,886 INFO L124 PetriNetUnfolderBase]: 15/72 cut-off events.
[2024-12-02 15:50:14,886 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES.
[2024-12-02 15:50:14,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 72 events. 15/72 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 163 event pairs, 7 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 48. Up to 39 conditions per place.
[2024-12-02 15:50:14,887 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 21 selfloop transitions, 4 changer transitions 0/38 dead transitions.
[2024-12-02 15:50:14,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 138 flow
[2024-12-02 15:50:14,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 15:50:14,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-12-02 15:50:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions.
[2024-12-02 15:50:14,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5523255813953488
[2024-12-02 15:50:14,889 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 78 flow. Second operand 4 states and 95 transitions.
[2024-12-02 15:50:14,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 138 flow
[2024-12-02 15:50:14,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-12-02 15:50:14,891 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 95 flow
[2024-12-02 15:50:14,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=39, PETRI_TRANSITIONS=36}
[2024-12-02 15:50:14,892 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places.
[2024-12-02 15:50:14,892 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 95 flow
[2024-12-02 15:50:14,892 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)
[2024-12-02 15:50:14,892 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:14,892 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:14,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-12-02 15:50:14,893 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:14,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1788303622, now seen corresponding path program 1 times
[2024-12-02 15:50:14,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:14,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886932862]
[2024-12-02 15:50:14,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:14,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:14,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:14,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886932862]
[2024-12-02 15:50:14,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886932862] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:14,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:14,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 15:50:14,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20502559]
[2024-12-02 15:50:14,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:14,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 15:50:14,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:14,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 15:50:14,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 15:50:15,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43
[2024-12-02 15:50:15,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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)
[2024-12-02 15:50:15,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:15,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43
[2024-12-02 15:50:15,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:15,082 INFO L124 PetriNetUnfolderBase]: 14/73 cut-off events.
[2024-12-02 15:50:15,082 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES.
[2024-12-02 15:50:15,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 73 events. 14/73 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 1 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 45. Up to 20 conditions per place.
[2024-12-02 15:50:15,083 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 18 selfloop transitions, 4 changer transitions 0/36 dead transitions.
[2024-12-02 15:50:15,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 139 flow
[2024-12-02 15:50:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 15:50:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-12-02 15:50:15,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions.
[2024-12-02 15:50:15,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5465116279069767
[2024-12-02 15:50:15,085 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 95 flow. Second operand 4 states and 94 transitions.
[2024-12-02 15:50:15,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 139 flow
[2024-12-02 15:50:15,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-12-02 15:50:15,087 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 94 flow
[2024-12-02 15:50:15,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=38, PETRI_TRANSITIONS=34}
[2024-12-02 15:50:15,088 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places.
[2024-12-02 15:50:15,088 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 94 flow
[2024-12-02 15:50:15,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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)
[2024-12-02 15:50:15,088 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:15,089 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:15,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-12-02 15:50:15,089 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:15,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:15,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1954874215, now seen corresponding path program 1 times
[2024-12-02 15:50:15,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:15,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621227482]
[2024-12-02 15:50:15,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:15,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:15,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:15,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621227482]
[2024-12-02 15:50:15,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621227482] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:15,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:15,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 15:50:15,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506119880]
[2024-12-02 15:50:15,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:15,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 15:50:15,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:15,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 15:50:15,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 15:50:15,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43
[2024-12-02 15:50:15,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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)
[2024-12-02 15:50:15,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:15,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43
[2024-12-02 15:50:15,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:15,174 INFO L124 PetriNetUnfolderBase]: 11/64 cut-off events.
[2024-12-02 15:50:15,174 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES.
[2024-12-02 15:50:15,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 64 events. 11/64 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 6 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 54. Up to 33 conditions per place.
[2024-12-02 15:50:15,175 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 19 selfloop transitions, 1 changer transitions 0/34 dead transitions.
[2024-12-02 15:50:15,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 134 flow
[2024-12-02 15:50:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 15:50:15,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-12-02 15:50:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions.
[2024-12-02 15:50:15,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6124031007751938
[2024-12-02 15:50:15,176 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 94 flow. Second operand 3 states and 79 transitions.
[2024-12-02 15:50:15,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 134 flow
[2024-12-02 15:50:15,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 34 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-12-02 15:50:15,178 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 86 flow
[2024-12-02 15:50:15,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=33}
[2024-12-02 15:50:15,178 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places.
[2024-12-02 15:50:15,179 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 86 flow
[2024-12-02 15:50:15,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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)
[2024-12-02 15:50:15,179 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:15,179 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:15,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-12-02 15:50:15,179 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:15,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1953818464, now seen corresponding path program 1 times
[2024-12-02 15:50:15,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:15,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361644622]
[2024-12-02 15:50:15,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:15,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:15,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:15,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361644622]
[2024-12-02 15:50:15,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361644622] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:15,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:15,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 15:50:15,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817518010]
[2024-12-02 15:50:15,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:15,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 15:50:15,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:15,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 15:50:15,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 15:50:15,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 43
[2024-12-02 15:50:15,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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)
[2024-12-02 15:50:15,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:15,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 43
[2024-12-02 15:50:15,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:15,412 INFO L124 PetriNetUnfolderBase]: 12/61 cut-off events.
[2024-12-02 15:50:15,413 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES.
[2024-12-02 15:50:15,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 61 events. 12/61 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 107 event pairs, 5 based on Foata normal form. 2/60 useless extension candidates. Maximal degree in co-relation 101. Up to 30 conditions per place.
[2024-12-02 15:50:15,413 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 19 selfloop transitions, 4 changer transitions 0/35 dead transitions.
[2024-12-02 15:50:15,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 136 flow
[2024-12-02 15:50:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 15:50:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-12-02 15:50:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions.
[2024-12-02 15:50:15,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5872093023255814
[2024-12-02 15:50:15,415 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 86 flow. Second operand 4 states and 101 transitions.
[2024-12-02 15:50:15,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 136 flow
[2024-12-02 15:50:15,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-12-02 15:50:15,416 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 96 flow
[2024-12-02 15:50:15,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=32}
[2024-12-02 15:50:15,417 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places.
[2024-12-02 15:50:15,417 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 96 flow
[2024-12-02 15:50:15,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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)
[2024-12-02 15:50:15,417 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:15,418 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:15,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-12-02 15:50:15,418 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:15,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:15,419 INFO L85 PathProgramCache]: Analyzing trace with hash 696805413, now seen corresponding path program 1 times
[2024-12-02 15:50:15,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:15,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573784666]
[2024-12-02 15:50:15,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:15,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573784666]
[2024-12-02 15:50:15,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573784666] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:50:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062834779]
[2024-12-02 15:50:15,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:15,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:15,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:15,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:15,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 15:50:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:15,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:15,663 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:15,746 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-12-02 15:50:15,747 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
[2024-12-02 15:50:15,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 15:50:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:15,929 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:16,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062834779] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:16,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:50:16,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 11
[2024-12-02 15:50:16,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312955991]
[2024-12-02 15:50:16,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:16,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-12-02 15:50:16,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:16,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-12-02 15:50:16,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156
[2024-12-02 15:50:16,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43
[2024-12-02 15:50:16,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 96 flow. Second operand has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 15:50:16,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:16,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43
[2024-12-02 15:50:16,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:16,691 INFO L124 PetriNetUnfolderBase]: 30/120 cut-off events.
[2024-12-02 15:50:16,691 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES.
[2024-12-02 15:50:16,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 120 events. 30/120 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 214 event pairs, 6 based on Foata normal form. 12/132 useless extension candidates. Maximal degree in co-relation 232. Up to 35 conditions per place.
[2024-12-02 15:50:16,692 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 30 selfloop transitions, 11 changer transitions 0/50 dead transitions.
[2024-12-02 15:50:16,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 220 flow
[2024-12-02 15:50:16,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 15:50:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-12-02 15:50:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions.
[2024-12-02 15:50:16,694 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5049833887043189
[2024-12-02 15:50:16,695 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 96 flow. Second operand 7 states and 152 transitions.
[2024-12-02 15:50:16,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 220 flow
[2024-12-02 15:50:16,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-12-02 15:50:16,696 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 150 flow
[2024-12-02 15:50:16,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=45, PETRI_TRANSITIONS=36}
[2024-12-02 15:50:16,697 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places.
[2024-12-02 15:50:16,697 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 150 flow
[2024-12-02 15:50:16,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 15:50:16,698 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:16,698 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:16,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 15:50:16,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-12-02 15:50:16,899 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:16,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1762716273, now seen corresponding path program 1 times
[2024-12-02 15:50:16,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:16,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035629787]
[2024-12-02 15:50:16,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:16,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:17,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:17,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035629787]
[2024-12-02 15:50:17,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035629787] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:50:17,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637549743]
[2024-12-02 15:50:17,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:17,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:17,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:17,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:17,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 15:50:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:17,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:17,140 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:17,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-12-02 15:50:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:17,279 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:17,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637549743] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:17,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:50:17,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10
[2024-12-02 15:50:17,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77993580]
[2024-12-02 15:50:17,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:17,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-12-02 15:50:17,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:17,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-12-02 15:50:17,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2024-12-02 15:50:17,523 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43
[2024-12-02 15:50:17,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 150 flow. Second operand has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 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)
[2024-12-02 15:50:17,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:17,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43
[2024-12-02 15:50:17,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:17,691 INFO L124 PetriNetUnfolderBase]: 25/111 cut-off events.
[2024-12-02 15:50:17,691 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES.
[2024-12-02 15:50:17,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 111 events. 25/111 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 180 event pairs, 4 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 240. Up to 29 conditions per place.
[2024-12-02 15:50:17,692 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 26 selfloop transitions, 11 changer transitions 0/48 dead transitions.
[2024-12-02 15:50:17,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 248 flow
[2024-12-02 15:50:17,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 15:50:17,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-12-02 15:50:17,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions.
[2024-12-02 15:50:17,694 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5514950166112956
[2024-12-02 15:50:17,694 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 150 flow. Second operand 7 states and 166 transitions.
[2024-12-02 15:50:17,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 248 flow
[2024-12-02 15:50:17,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 232 flow, removed 6 selfloop flow, removed 2 redundant places.
[2024-12-02 15:50:17,698 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 184 flow
[2024-12-02 15:50:17,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=37}
[2024-12-02 15:50:17,698 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places.
[2024-12-02 15:50:17,699 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 184 flow
[2024-12-02 15:50:17,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 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)
[2024-12-02 15:50:17,699 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:17,699 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:17,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-12-02 15:50:17,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-12-02 15:50:17,900 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:17,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1316447649, now seen corresponding path program 1 times
[2024-12-02 15:50:17,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:17,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39126865]
[2024-12-02 15:50:17,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:17,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:18,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:18,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39126865]
[2024-12-02 15:50:18,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39126865] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:18,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:18,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-12-02 15:50:18,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086510487]
[2024-12-02 15:50:18,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:18,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-12-02 15:50:18,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:18,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-12-02 15:50:18,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-12-02 15:50:18,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43
[2024-12-02 15:50:18,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 184 flow. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 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)
[2024-12-02 15:50:18,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:18,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43
[2024-12-02 15:50:18,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:18,366 INFO L124 PetriNetUnfolderBase]: 24/123 cut-off events.
[2024-12-02 15:50:18,366 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES.
[2024-12-02 15:50:18,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 123 events. 24/123 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 236 event pairs, 12 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 299. Up to 51 conditions per place.
[2024-12-02 15:50:18,367 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 28 selfloop transitions, 9 changer transitions 0/49 dead transitions.
[2024-12-02 15:50:18,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 49 transitions, 283 flow
[2024-12-02 15:50:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-12-02 15:50:18,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-12-02 15:50:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions.
[2024-12-02 15:50:18,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49767441860465117
[2024-12-02 15:50:18,369 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 184 flow. Second operand 10 states and 214 transitions.
[2024-12-02 15:50:18,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 49 transitions, 283 flow
[2024-12-02 15:50:18,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 269 flow, removed 0 selfloop flow, removed 5 redundant places.
[2024-12-02 15:50:18,372 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 218 flow
[2024-12-02 15:50:18,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=218, PETRI_PLACES=61, PETRI_TRANSITIONS=42}
[2024-12-02 15:50:18,373 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places.
[2024-12-02 15:50:18,373 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 218 flow
[2024-12-02 15:50:18,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 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)
[2024-12-02 15:50:18,374 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:18,374 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:18,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-12-02 15:50:18,374 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:18,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash -815916709, now seen corresponding path program 1 times
[2024-12-02 15:50:18,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:18,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841425588]
[2024-12-02 15:50:18,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:18,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:18,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841425588]
[2024-12-02 15:50:18,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841425588] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:18,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:18,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-12-02 15:50:18,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444127585]
[2024-12-02 15:50:18,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:18,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-12-02 15:50:18,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:18,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-12-02 15:50:18,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2024-12-02 15:50:18,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 43
[2024-12-02 15:50:18,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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)
[2024-12-02 15:50:18,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:18,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 43
[2024-12-02 15:50:18,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:18,800 INFO L124 PetriNetUnfolderBase]: 20/115 cut-off events.
[2024-12-02 15:50:18,800 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES.
[2024-12-02 15:50:18,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 115 events. 20/115 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 9 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 308. Up to 42 conditions per place.
[2024-12-02 15:50:18,801 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 21 selfloop transitions, 7 changer transitions 5/47 dead transitions.
[2024-12-02 15:50:18,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 47 transitions, 293 flow
[2024-12-02 15:50:18,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-12-02 15:50:18,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2024-12-02 15:50:18,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions.
[2024-12-02 15:50:18,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5193798449612403
[2024-12-02 15:50:18,803 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 218 flow. Second operand 9 states and 201 transitions.
[2024-12-02 15:50:18,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 47 transitions, 293 flow
[2024-12-02 15:50:18,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 47 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-12-02 15:50:18,805 INFO L231 Difference]: Finished difference. Result has 66 places, 39 transitions, 203 flow
[2024-12-02 15:50:18,806 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=203, PETRI_PLACES=66, PETRI_TRANSITIONS=39}
[2024-12-02 15:50:18,806 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places.
[2024-12-02 15:50:18,806 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 39 transitions, 203 flow
[2024-12-02 15:50:18,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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)
[2024-12-02 15:50:18,807 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:18,807 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:18,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-12-02 15:50:18,807 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:18,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash -2043120856, now seen corresponding path program 1 times
[2024-12-02 15:50:18,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:18,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039468479]
[2024-12-02 15:50:18,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:18,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:18,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039468479]
[2024-12-02 15:50:18,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039468479] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:50:18,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265915299]
[2024-12-02 15:50:18,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:18,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:18,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:18,980 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:18,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 15:50:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:19,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:19,055 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:19,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 15:50:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:19,187 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:19,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265915299] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:19,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:50:19,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13
[2024-12-02 15:50:19,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035292381]
[2024-12-02 15:50:19,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:19,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-12-02 15:50:19,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:19,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-12-02 15:50:19,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182
[2024-12-02 15:50:19,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43
[2024-12-02 15:50:19,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 39 transitions, 203 flow. Second operand has 14 states, 14 states have (on average 23.0) internal successors, (322), 14 states have internal predecessors, (322), 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)
[2024-12-02 15:50:19,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:19,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43
[2024-12-02 15:50:19,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:19,561 INFO L124 PetriNetUnfolderBase]: 19/107 cut-off events.
[2024-12-02 15:50:19,561 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES.
[2024-12-02 15:50:19,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 107 events. 19/107 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 178 event pairs, 9 based on Foata normal form. 2/109 useless extension candidates. Maximal degree in co-relation 286. Up to 40 conditions per place.
[2024-12-02 15:50:19,562 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 23 selfloop transitions, 6 changer transitions 1/43 dead transitions.
[2024-12-02 15:50:19,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 43 transitions, 266 flow
[2024-12-02 15:50:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 15:50:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-12-02 15:50:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions.
[2024-12-02 15:50:19,564 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5614617940199336
[2024-12-02 15:50:19,564 INFO L175 Difference]: Start difference. First operand has 66 places, 39 transitions, 203 flow. Second operand 7 states and 169 transitions.
[2024-12-02 15:50:19,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 43 transitions, 266 flow
[2024-12-02 15:50:19,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 248 flow, removed 2 selfloop flow, removed 8 redundant places.
[2024-12-02 15:50:19,566 INFO L231 Difference]: Finished difference. Result has 62 places, 38 transitions, 195 flow
[2024-12-02 15:50:19,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=62, PETRI_TRANSITIONS=38}
[2024-12-02 15:50:19,567 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places.
[2024-12-02 15:50:19,567 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 38 transitions, 195 flow
[2024-12-02 15:50:19,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.0) internal successors, (322), 14 states have internal predecessors, (322), 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)
[2024-12-02 15:50:19,567 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:19,567 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:19,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-12-02 15:50:19,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-12-02 15:50:19,768 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:19,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:19,769 INFO L85 PathProgramCache]: Analyzing trace with hash -17712933, now seen corresponding path program 2 times
[2024-12-02 15:50:19,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:19,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512861670]
[2024-12-02 15:50:19,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:50:19,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:19,788 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:50:19,789 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:19,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:19,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512861670]
[2024-12-02 15:50:19,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512861670] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:50:19,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972281780]
[2024-12-02 15:50:19,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:50:19,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:19,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:19,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:19,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 15:50:20,072 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:50:20,073 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:20,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:20,075 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:20,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 15:50:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:20,264 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:20,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972281780] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:20,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:50:20,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16
[2024-12-02 15:50:20,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957517196]
[2024-12-02 15:50:20,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:20,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-12-02 15:50:20,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:20,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-12-02 15:50:20,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272
[2024-12-02 15:50:20,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43
[2024-12-02 15:50:20,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 38 transitions, 195 flow. Second operand has 17 states, 17 states have (on average 22.941176470588236) internal successors, (390), 17 states have internal predecessors, (390), 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)
[2024-12-02 15:50:20,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:20,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43
[2024-12-02 15:50:20,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:20,849 INFO L124 PetriNetUnfolderBase]: 15/101 cut-off events.
[2024-12-02 15:50:20,849 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES.
[2024-12-02 15:50:20,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 101 events. 15/101 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 140 event pairs, 6 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 257. Up to 31 conditions per place.
[2024-12-02 15:50:20,850 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 23 selfloop transitions, 7 changer transitions 0/43 dead transitions.
[2024-12-02 15:50:20,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 43 transitions, 262 flow
[2024-12-02 15:50:20,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-12-02 15:50:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-12-02 15:50:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions.
[2024-12-02 15:50:20,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5552325581395349
[2024-12-02 15:50:20,851 INFO L175 Difference]: Start difference. First operand has 62 places, 38 transitions, 195 flow. Second operand 8 states and 191 transitions.
[2024-12-02 15:50:20,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 43 transitions, 262 flow
[2024-12-02 15:50:20,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 43 transitions, 250 flow, removed 1 selfloop flow, removed 5 redundant places.
[2024-12-02 15:50:20,853 INFO L231 Difference]: Finished difference. Result has 65 places, 38 transitions, 202 flow
[2024-12-02 15:50:20,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=202, PETRI_PLACES=65, PETRI_TRANSITIONS=38}
[2024-12-02 15:50:20,854 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places.
[2024-12-02 15:50:20,854 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 38 transitions, 202 flow
[2024-12-02 15:50:20,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.941176470588236) internal successors, (390), 17 states have internal predecessors, (390), 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)
[2024-12-02 15:50:20,855 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:20,855 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:20,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-12-02 15:50:21,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2024-12-02 15:50:21,055 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:21,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:21,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1167425722, now seen corresponding path program 2 times
[2024-12-02 15:50:21,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:21,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809957173]
[2024-12-02 15:50:21,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:50:21,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:21,074 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:50:21,075 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:21,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:21,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809957173]
[2024-12-02 15:50:21,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809957173] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:50:21,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399991218]
[2024-12-02 15:50:21,285 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:50:21,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:21,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:21,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:21,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-12-02 15:50:21,363 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:50:21,363 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:21,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:21,366 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:21,400 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-12-02 15:50:21,401 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
[2024-12-02 15:50:21,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 15:50:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:21,705 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:21,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399991218] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:21,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:50:21,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21
[2024-12-02 15:50:21,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94534025]
[2024-12-02 15:50:21,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:21,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-12-02 15:50:21,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:21,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-12-02 15:50:21,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506
[2024-12-02 15:50:22,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43
[2024-12-02 15:50:22,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 38 transitions, 202 flow. Second operand has 23 states, 23 states have (on average 18.391304347826086) internal successors, (423), 23 states have internal predecessors, (423), 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)
[2024-12-02 15:50:22,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:22,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43
[2024-12-02 15:50:22,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:22,824 INFO L124 PetriNetUnfolderBase]: 48/190 cut-off events.
[2024-12-02 15:50:22,824 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES.
[2024-12-02 15:50:22,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 190 events. 48/190 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 287 event pairs, 6 based on Foata normal form. 8/198 useless extension candidates. Maximal degree in co-relation 589. Up to 38 conditions per place.
[2024-12-02 15:50:22,825 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 46 selfloop transitions, 16 changer transitions 0/72 dead transitions.
[2024-12-02 15:50:22,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 486 flow
[2024-12-02 15:50:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-12-02 15:50:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states.
[2024-12-02 15:50:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions.
[2024-12-02 15:50:22,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558
[2024-12-02 15:50:22,827 INFO L175 Difference]: Start difference. First operand has 65 places, 38 transitions, 202 flow. Second operand 11 states and 231 transitions.
[2024-12-02 15:50:22,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 486 flow
[2024-12-02 15:50:22,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 470 flow, removed 2 selfloop flow, removed 6 redundant places.
[2024-12-02 15:50:22,831 INFO L231 Difference]: Finished difference. Result has 74 places, 47 transitions, 327 flow
[2024-12-02 15:50:22,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=327, PETRI_PLACES=74, PETRI_TRANSITIONS=47}
[2024-12-02 15:50:22,831 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places.
[2024-12-02 15:50:22,831 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 47 transitions, 327 flow
[2024-12-02 15:50:22,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.391304347826086) internal successors, (423), 23 states have internal predecessors, (423), 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)
[2024-12-02 15:50:22,832 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:22,832 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:22,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-12-02 15:50:23,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:23,033 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:23,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:23,033 INFO L85 PathProgramCache]: Analyzing trace with hash 909662780, now seen corresponding path program 2 times
[2024-12-02 15:50:23,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:23,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434534490]
[2024-12-02 15:50:23,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:50:23,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:23,044 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-12-02 15:50:23,044 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked.
[2024-12-02 15:50:23,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:23,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434534490]
[2024-12-02 15:50:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434534490] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:50:23,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333177535]
[2024-12-02 15:50:23,132 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:50:23,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:23,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:23,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:23,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-12-02 15:50:23,202 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-12-02 15:50:23,202 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:23,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:23,204 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:23,241 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-12-02 15:50:23,241 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
[2024-12-02 15:50:23,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 15:50:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked.
[2024-12-02 15:50:23,624 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked.
[2024-12-02 15:50:24,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333177535] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:24,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:50:24,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12
[2024-12-02 15:50:24,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271648586]
[2024-12-02 15:50:24,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:24,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-12-02 15:50:24,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:24,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-12-02 15:50:24,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2024-12-02 15:50:24,335 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43
[2024-12-02 15:50:24,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 47 transitions, 327 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)
[2024-12-02 15:50:24,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:24,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43
[2024-12-02 15:50:24,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:24,493 INFO L124 PetriNetUnfolderBase]: 55/189 cut-off events.
[2024-12-02 15:50:24,493 INFO L125 PetriNetUnfolderBase]: For 587/587 co-relation queries the response was YES.
[2024-12-02 15:50:24,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 189 events. 55/189 cut-off events. For 587/587 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 263 event pairs, 2 based on Foata normal form. 8/197 useless extension candidates. Maximal degree in co-relation 629. Up to 80 conditions per place.
[2024-12-02 15:50:24,494 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 24 selfloop transitions, 19 changer transitions 0/51 dead transitions.
[2024-12-02 15:50:24,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 51 transitions, 415 flow
[2024-12-02 15:50:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 15:50:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-12-02 15:50:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions.
[2024-12-02 15:50:24,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752
[2024-12-02 15:50:24,496 INFO L175 Difference]: Start difference. First operand has 74 places, 47 transitions, 327 flow. Second operand 6 states and 116 transitions.
[2024-12-02 15:50:24,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 51 transitions, 415 flow
[2024-12-02 15:50:24,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 51 transitions, 390 flow, removed 0 selfloop flow, removed 8 redundant places.
[2024-12-02 15:50:24,500 INFO L231 Difference]: Finished difference. Result has 71 places, 47 transitions, 347 flow
[2024-12-02 15:50:24,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=71, PETRI_TRANSITIONS=47}
[2024-12-02 15:50:24,500 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places.
[2024-12-02 15:50:24,500 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 47 transitions, 347 flow
[2024-12-02 15:50:24,501 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)
[2024-12-02 15:50:24,501 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:24,501 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:24,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-12-02 15:50:24,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2024-12-02 15:50:24,701 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:24,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:24,702 INFO L85 PathProgramCache]: Analyzing trace with hash -866977162, now seen corresponding path program 3 times
[2024-12-02 15:50:24,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:24,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141188076]
[2024-12-02 15:50:24,702 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:50:24,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:24,730 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2024-12-02 15:50:24,730 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:25,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:25,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141188076]
[2024-12-02 15:50:25,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141188076] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:50:25,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708568541]
[2024-12-02 15:50:25,172 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:50:25,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:25,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:25,174 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:25,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-12-02 15:50:25,268 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2024-12-02 15:50:25,268 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:25,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:25,271 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:25,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 15:50:25,488 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:25,488 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708568541] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:25,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:50:25,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20
[2024-12-02 15:50:25,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55588572]
[2024-12-02 15:50:25,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:25,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 15:50:25,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:25,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 15:50:25,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420
[2024-12-02 15:50:25,968 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 43
[2024-12-02 15:50:25,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 47 transitions, 347 flow. Second operand has 21 states, 21 states have (on average 22.142857142857142) internal successors, (465), 21 states have internal predecessors, (465), 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)
[2024-12-02 15:50:25,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:25,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 43
[2024-12-02 15:50:25,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:26,309 INFO L124 PetriNetUnfolderBase]: 40/172 cut-off events.
[2024-12-02 15:50:26,309 INFO L125 PetriNetUnfolderBase]: For 704/704 co-relation queries the response was YES.
[2024-12-02 15:50:26,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 172 events. 40/172 cut-off events. For 704/704 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 18 based on Foata normal form. 2/174 useless extension candidates. Maximal degree in co-relation 585. Up to 73 conditions per place.
[2024-12-02 15:50:26,310 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 38 selfloop transitions, 9 changer transitions 0/57 dead transitions.
[2024-12-02 15:50:26,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 57 transitions, 474 flow
[2024-12-02 15:50:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-12-02 15:50:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-12-02 15:50:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 231 transitions.
[2024-12-02 15:50:26,311 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5372093023255814
[2024-12-02 15:50:26,311 INFO L175 Difference]: Start difference. First operand has 71 places, 47 transitions, 347 flow. Second operand 10 states and 231 transitions.
[2024-12-02 15:50:26,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 57 transitions, 474 flow
[2024-12-02 15:50:26,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 57 transitions, 446 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-12-02 15:50:26,314 INFO L231 Difference]: Finished difference. Result has 78 places, 47 transitions, 343 flow
[2024-12-02 15:50:26,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=343, PETRI_PLACES=78, PETRI_TRANSITIONS=47}
[2024-12-02 15:50:26,315 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places.
[2024-12-02 15:50:26,315 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 47 transitions, 343 flow
[2024-12-02 15:50:26,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 22.142857142857142) internal successors, (465), 21 states have internal predecessors, (465), 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)
[2024-12-02 15:50:26,315 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:26,315 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:26,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-12-02 15:50:26,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-12-02 15:50:26,516 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:26,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1357974953, now seen corresponding path program 4 times
[2024-12-02 15:50:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781963769]
[2024-12-02 15:50:26,516 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 15:50:26,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:26,531 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 15:50:26,531 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:26,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:26,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781963769]
[2024-12-02 15:50:26,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781963769] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:50:26,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577745307]
[2024-12-02 15:50:26,759 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 15:50:26,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:26,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:26,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:26,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-12-02 15:50:26,843 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 15:50:26,843 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:26,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:26,846 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:27,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 15:50:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:27,118 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:27,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577745307] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:27,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:50:27,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22
[2024-12-02 15:50:27,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739374659]
[2024-12-02 15:50:27,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:27,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-12-02 15:50:27,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:27,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-12-02 15:50:27,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506
[2024-12-02 15:50:27,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43
[2024-12-02 15:50:27,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 47 transitions, 343 flow. Second operand has 23 states, 23 states have (on average 22.695652173913043) internal successors, (522), 23 states have internal predecessors, (522), 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)
[2024-12-02 15:50:27,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:27,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43
[2024-12-02 15:50:27,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:27,840 INFO L124 PetriNetUnfolderBase]: 29/159 cut-off events.
[2024-12-02 15:50:27,840 INFO L125 PetriNetUnfolderBase]: For 595/595 co-relation queries the response was YES.
[2024-12-02 15:50:27,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 159 events. 29/159 cut-off events. For 595/595 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 221 event pairs, 12 based on Foata normal form. 2/161 useless extension candidates. Maximal degree in co-relation 531. Up to 51 conditions per place.
[2024-12-02 15:50:27,841 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 31 selfloop transitions, 9 changer transitions 0/54 dead transitions.
[2024-12-02 15:50:27,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 54 transitions, 435 flow
[2024-12-02 15:50:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-12-02 15:50:27,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-12-02 15:50:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions.
[2024-12-02 15:50:27,843 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5511627906976744
[2024-12-02 15:50:27,843 INFO L175 Difference]: Start difference. First operand has 78 places, 47 transitions, 343 flow. Second operand 10 states and 237 transitions.
[2024-12-02 15:50:27,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 54 transitions, 435 flow
[2024-12-02 15:50:27,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 54 transitions, 413 flow, removed 3 selfloop flow, removed 8 redundant places.
[2024-12-02 15:50:27,847 INFO L231 Difference]: Finished difference. Result has 81 places, 47 transitions, 345 flow
[2024-12-02 15:50:27,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=81, PETRI_TRANSITIONS=47}
[2024-12-02 15:50:27,848 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places.
[2024-12-02 15:50:27,848 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 47 transitions, 345 flow
[2024-12-02 15:50:27,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 22.695652173913043) internal successors, (522), 23 states have internal predecessors, (522), 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)
[2024-12-02 15:50:27,848 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:27,848 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:27,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-12-02 15:50:28,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:28,049 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:28,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:28,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1089227216, now seen corresponding path program 5 times
[2024-12-02 15:50:28,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:28,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5446193]
[2024-12-02 15:50:28,050 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 15:50:28,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:28,073 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2024-12-02 15:50:28,073 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:28,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:28,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5446193]
[2024-12-02 15:50:28,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5446193] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:50:28,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143912042]
[2024-12-02 15:50:28,287 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 15:50:28,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:28,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:28,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:28,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-12-02 15:50:28,387 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2024-12-02 15:50:28,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:28,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:28,390 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:28,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 15:50:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:28,739 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:28,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143912042] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:28,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:50:28,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25
[2024-12-02 15:50:28,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526825690]
[2024-12-02 15:50:28,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:28,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2024-12-02 15:50:28,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:28,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2024-12-02 15:50:28,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650
[2024-12-02 15:50:29,457 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43
[2024-12-02 15:50:29,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 47 transitions, 345 flow. Second operand has 26 states, 26 states have (on average 22.615384615384617) internal successors, (588), 26 states have internal predecessors, (588), 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)
[2024-12-02 15:50:29,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:29,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43
[2024-12-02 15:50:29,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:29,820 INFO L124 PetriNetUnfolderBase]: 26/154 cut-off events.
[2024-12-02 15:50:29,820 INFO L125 PetriNetUnfolderBase]: For 616/616 co-relation queries the response was YES.
[2024-12-02 15:50:29,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 154 events. 26/154 cut-off events. For 616/616 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 211 event pairs, 9 based on Foata normal form. 2/156 useless extension candidates. Maximal degree in co-relation 511. Up to 40 conditions per place.
[2024-12-02 15:50:29,821 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 31 selfloop transitions, 10 changer transitions 0/55 dead transitions.
[2024-12-02 15:50:29,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 55 transitions, 443 flow
[2024-12-02 15:50:29,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-12-02 15:50:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states.
[2024-12-02 15:50:29,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions.
[2024-12-02 15:50:29,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5496828752642706
[2024-12-02 15:50:29,822 INFO L175 Difference]: Start difference. First operand has 81 places, 47 transitions, 345 flow. Second operand 11 states and 260 transitions.
[2024-12-02 15:50:29,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 55 transitions, 443 flow
[2024-12-02 15:50:29,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 55 transitions, 419 flow, removed 4 selfloop flow, removed 8 redundant places.
[2024-12-02 15:50:29,827 INFO L231 Difference]: Finished difference. Result has 85 places, 47 transitions, 349 flow
[2024-12-02 15:50:29,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=349, PETRI_PLACES=85, PETRI_TRANSITIONS=47}
[2024-12-02 15:50:29,827 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places.
[2024-12-02 15:50:29,828 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 47 transitions, 349 flow
[2024-12-02 15:50:29,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 22.615384615384617) internal successors, (588), 26 states have internal predecessors, (588), 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)
[2024-12-02 15:50:29,828 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:29,828 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:29,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-12-02 15:50:30,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:30,029 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:30,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2013160073, now seen corresponding path program 6 times
[2024-12-02 15:50:30,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:30,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414200366]
[2024-12-02 15:50:30,029 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 15:50:30,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:30,051 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2024-12-02 15:50:30,051 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:30,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414200366]
[2024-12-02 15:50:30,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414200366] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:50:30,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315183656]
[2024-12-02 15:50:30,331 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 15:50:30,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:30,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:30,332 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:30,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-12-02 15:50:30,435 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2024-12-02 15:50:30,435 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:30,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:30,438 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:30,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 15:50:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:30,795 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:30,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315183656] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:30,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:50:30,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28
[2024-12-02 15:50:30,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031576700]
[2024-12-02 15:50:30,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:30,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2024-12-02 15:50:30,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:30,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2024-12-02 15:50:30,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812
[2024-12-02 15:50:31,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43
[2024-12-02 15:50:31,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 47 transitions, 349 flow. Second operand has 29 states, 29 states have (on average 22.551724137931036) internal successors, (654), 29 states have internal predecessors, (654), 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)
[2024-12-02 15:50:31,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:31,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43
[2024-12-02 15:50:31,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:32,070 INFO L124 PetriNetUnfolderBase]: 23/155 cut-off events.
[2024-12-02 15:50:32,070 INFO L125 PetriNetUnfolderBase]: For 651/651 co-relation queries the response was YES.
[2024-12-02 15:50:32,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 155 events. 23/155 cut-off events. For 651/651 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 6 based on Foata normal form. 2/157 useless extension candidates. Maximal degree in co-relation 509. Up to 31 conditions per place.
[2024-12-02 15:50:32,071 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 31 selfloop transitions, 11 changer transitions 0/56 dead transitions.
[2024-12-02 15:50:32,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 56 transitions, 453 flow
[2024-12-02 15:50:32,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-12-02 15:50:32,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2024-12-02 15:50:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 283 transitions.
[2024-12-02 15:50:32,073 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5484496124031008
[2024-12-02 15:50:32,073 INFO L175 Difference]: Start difference. First operand has 85 places, 47 transitions, 349 flow. Second operand 12 states and 283 transitions.
[2024-12-02 15:50:32,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 56 transitions, 453 flow
[2024-12-02 15:50:32,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 56 transitions, 425 flow, removed 5 selfloop flow, removed 9 redundant places.
[2024-12-02 15:50:32,078 INFO L231 Difference]: Finished difference. Result has 89 places, 47 transitions, 353 flow
[2024-12-02 15:50:32,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=353, PETRI_PLACES=89, PETRI_TRANSITIONS=47}
[2024-12-02 15:50:32,078 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places.
[2024-12-02 15:50:32,078 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 47 transitions, 353 flow
[2024-12-02 15:50:32,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 22.551724137931036) internal successors, (654), 29 states have internal predecessors, (654), 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)
[2024-12-02 15:50:32,079 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:32,079 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:32,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-12-02 15:50:32,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-12-02 15:50:32,279 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:32,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:32,280 INFO L85 PathProgramCache]: Analyzing trace with hash -828021418, now seen corresponding path program 3 times
[2024-12-02 15:50:32,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:32,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331482806]
[2024-12-02 15:50:32,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:50:32,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:32,288 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 15:50:32,289 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2024-12-02 15:50:32,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 15:50:32,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331482806]
[2024-12-02 15:50:32,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331482806] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 15:50:32,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038876380]
[2024-12-02 15:50:32,455 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:50:32,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:32,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:32,457 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:32,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-12-02 15:50:32,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 15:50:32,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:32,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:32,533 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:32,555 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-12-02 15:50:32,555 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
[2024-12-02 15:50:32,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 15:50:32,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 15:50:32,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15
[2024-12-02 15:50:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2024-12-02 15:50:32,990 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2024-12-02 15:50:33,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038876380] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:33,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 15:50:33,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17
[2024-12-02 15:50:33,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133140519]
[2024-12-02 15:50:33,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:33,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-12-02 15:50:33,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 15:50:33,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-12-02 15:50:33,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342
[2024-12-02 15:50:33,558 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43
[2024-12-02 15:50:33,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 47 transitions, 353 flow. Second operand has 19 states, 19 states have (on average 16.526315789473685) internal successors, (314), 19 states have internal predecessors, (314), 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)
[2024-12-02 15:50:33,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:33,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43
[2024-12-02 15:50:33,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:33,756 INFO L124 PetriNetUnfolderBase]: 41/171 cut-off events.
[2024-12-02 15:50:33,756 INFO L125 PetriNetUnfolderBase]: For 625/625 co-relation queries the response was YES.
[2024-12-02 15:50:33,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 171 events. 41/171 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 194 event pairs, 3 based on Foata normal form. 2/173 useless extension candidates. Maximal degree in co-relation 565. Up to 72 conditions per place.
[2024-12-02 15:50:33,758 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 23 selfloop transitions, 19 changer transitions 0/50 dead transitions.
[2024-12-02 15:50:33,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 50 transitions, 427 flow
[2024-12-02 15:50:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 15:50:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-12-02 15:50:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions.
[2024-12-02 15:50:33,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294
[2024-12-02 15:50:33,759 INFO L175 Difference]: Start difference. First operand has 89 places, 47 transitions, 353 flow. Second operand 6 states and 112 transitions.
[2024-12-02 15:50:33,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 50 transitions, 427 flow
[2024-12-02 15:50:33,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 50 transitions, 370 flow, removed 6 selfloop flow, removed 18 redundant places.
[2024-12-02 15:50:33,764 INFO L231 Difference]: Finished difference. Result has 75 places, 46 transitions, 316 flow
[2024-12-02 15:50:33,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=75, PETRI_TRANSITIONS=46}
[2024-12-02 15:50:33,764 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places.
[2024-12-02 15:50:33,764 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 46 transitions, 316 flow
[2024-12-02 15:50:33,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.526315789473685) internal successors, (314), 19 states have internal predecessors, (314), 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)
[2024-12-02 15:50:33,765 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:33,765 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:33,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-12-02 15:50:33,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-12-02 15:50:33,965 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:33,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1463024146, now seen corresponding path program 7 times
[2024-12-02 15:50:33,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 15:50:33,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446203849]
[2024-12-02 15:50:33,966 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 15:50:33,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 15:50:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-12-02 15:50:33,987 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-12-02 15:50:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-12-02 15:50:34,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-12-02 15:50:34,031 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-12-02 15:50:34,032 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining)
[2024-12-02 15:50:34,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining)
[2024-12-02 15:50:34,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining)
[2024-12-02 15:50:34,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining)
[2024-12-02 15:50:34,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (8 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining)
[2024-12-02 15:50:34,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining)
[2024-12-02 15:50:34,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining)
[2024-12-02 15:50:34,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2024-12-02 15:50:34,035 INFO L422 BasicCegarLoop]: Path program histogram: [7, 3, 2, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:34,069 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2024-12-02 15:50:34,069 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-12-02 15:50:34,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:50:34 BasicIcfg
[2024-12-02 15:50:34,073 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-12-02 15:50:34,074 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-12-02 15:50:34,074 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-12-02 15:50:34,074 INFO L274 PluginConnector]: Witness Printer initialized
[2024-12-02 15:50:34,075 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:13" (3/4) ...
[2024-12-02 15:50:34,076 INFO L149 WitnessPrinter]: No result that supports witness generation found
[2024-12-02 15:50:34,077 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-12-02 15:50:34,077 INFO L158 Benchmark]: Toolchain (without parser) took 21244.55ms. Allocated memory was 117.4MB in the beginning and 226.5MB in the end (delta: 109.1MB). Free memory was 91.1MB in the beginning and 114.0MB in the end (delta: -23.0MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB.
[2024-12-02 15:50:34,078 INFO L158 Benchmark]: CDTParser took 0.76ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 87.1kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:50:34,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 540.28ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 59.0MB in the end (delta: 31.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB.
[2024-12-02 15:50:34,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.71ms. Allocated memory is still 117.4MB. Free memory was 59.0MB in the beginning and 56.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:50:34,078 INFO L158 Benchmark]: Boogie Preprocessor took 30.93ms. Allocated memory is still 117.4MB. Free memory was 56.9MB in the beginning and 55.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:50:34,078 INFO L158 Benchmark]: RCFGBuilder took 394.44ms. Allocated memory is still 117.4MB. Free memory was 55.1MB in the beginning and 84.7MB in the end (delta: -29.6MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB.
[2024-12-02 15:50:34,079 INFO L158 Benchmark]: TraceAbstraction took 20235.58ms. Allocated memory was 117.4MB in the beginning and 226.5MB in the end (delta: 109.1MB). Free memory was 84.2MB in the beginning and 114.1MB in the end (delta: -29.9MB). Peak memory consumption was 79.2MB. Max. memory is 16.1GB.
[2024-12-02 15:50:34,079 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 226.5MB. Free memory was 114.1MB in the beginning and 114.0MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:50:34,080 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.76ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 87.1kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 540.28ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 59.0MB in the end (delta: 31.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 34.71ms. Allocated memory is still 117.4MB. Free memory was 59.0MB in the beginning and 56.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 30.93ms. Allocated memory is still 117.4MB. Free memory was 56.9MB in the beginning and 55.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 394.44ms. Allocated memory is still 117.4MB. Free memory was 55.1MB in the beginning and 84.7MB in the end (delta: -29.6MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 20235.58ms. Allocated memory was 117.4MB in the beginning and 226.5MB in the end (delta: 109.1MB). Free memory was 84.2MB in the beginning and 114.1MB in the end (delta: -29.9MB). Peak memory consumption was 79.2MB. Max. memory is 16.1GB.
* Witness Printer took 2.95ms. Allocated memory is still 226.5MB. Free memory was 114.1MB in the beginning and 114.0MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 1119]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: overapproximation of memtrack at line 1119.
Possible FailurePath:
[L1108] 0 char *v;
[L1121] 0 pthread_t t1, t2;
[L1122] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0)
VAL [\old(arg)={0:0}, t1=-1, v={0:0}]
[L1111] 1 v = malloc(sizeof(char) * 8)
[L1112] 1 return 0;
[L1123] FCALL, JOIN 1 pthread_join(t1, 0)
VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, t1=-1, v={-1:0}]
[L1124] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0)
VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, t1=-1, t2=0, v={-1:0}]
[L1116] COND TRUE 2 \read(*v)
[L1116] FCALL 2 strcpy(v, "Bigshot")
[L1117] 2 return 0;
[L1125] FCALL, JOIN 2 pthread_join(t2, 0)
VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, t1=-1, t2=0, v={-1:0}]
[L1126] EXPR 0 v[0]
[L1126] CALL 0 __VERIFIER_assert(v[0] == 'B')
[L1107] COND FALSE 0 !(!expression)
VAL [\old(arg)={0:0}, \old(expression)=1, \result={0:0}, arg={0:0}, expression=1, v={-1:0}]
[L1126] RET 0 __VERIFIER_assert(v[0] == 'B')
[L1127] 0 return 0;
VAL [\old(arg)={0:0}, \result=0, \result={0:0}, arg={0:0}, t1=-1, t2=0, v={-1:0}]
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: Not analyzed.
- UnprovableResult [Line: 1122]: Unable to prove that petrification did provide enough thread instances (tool internal message)
Unable to prove that petrification did provide enough thread instances (tool internal message)
Reason: Not analyzed.
- UnprovableResult [Line: 1124]: Unable to prove that petrification did provide enough thread instances (tool internal message)
Unable to prove that petrification did provide enough thread instances (tool internal message)
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 60 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.1s, OverallIterations: 19, TraceHistogramMax: 9, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2743 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2436 mSDsluCounter, 1795 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1739 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12603 IncrementalHoareTripleChecker+Invalid, 12672 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 56 mSDtfsCounter, 12603 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1018 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=353occurred in iteration=17, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 1032 NumberOfCodeBlocks, 900 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 1358 ConstructedInterpolants, 12 QuantifiedInterpolants, 18230 SizeOfPredicates, 42 NumberOfNonLiveVariables, 2161 ConjunctsInSsa, 198 ConjunctsInUnsatCore, 40 InterpolantComputations, 7 PerfectInterpolantSequences, 573/1866 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2024-12-02 15:50:34,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/bigshot_s2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1 --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 fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 15:50:36,076 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 15:50:36,176 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf
[2024-12-02 15:50:36,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 15:50:36,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 15:50:36,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 15:50:36,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 15:50:36,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 15:50:36,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 15:50:36,206 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 15:50:36,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 15:50:36,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 15:50:36,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 15:50:36,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 15:50:36,206 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 15:50:36,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 15:50:36,207 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 15:50:36,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 15:50:36,207 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 15:50:36,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 15:50:36,207 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-12-02 15:50:36,207 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-12-02 15:50:36,207 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-12-02 15:50:36,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 15:50:36,207 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-12-02 15:50:36,208 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-12-02 15:50:36,208 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-12-02 15:50:36,208 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-12-02 15:50:36,208 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 15:50:36,208 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 15:50:36,208 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 15:50:36,208 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 15:50:36,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 15:50:36,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 15:50:36,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 15:50:36,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:50:36,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 15:50:36,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 15:50:36,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 15:50:36,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 15:50:36,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:50:36,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 15:50:36,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 15:50:36,209 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-12-02 15:50:36,209 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-12-02 15:50:36,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 15:50:36,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 15:50:36,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 15:50:36,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 15:50:36,209 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_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1
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 -> fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb
[2024-12-02 15:50:36,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 15:50:36,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 15:50:36,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 15:50:36,470 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 15:50:36,471 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 15:50:36,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/pthread/bigshot_s2.i
[2024-12-02 15:50:39,137 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/data/84de339af/a434846368db4c398633bdadaaebbca9/FLAG58281f624
[2024-12-02 15:50:39,370 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 15:50:39,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/sv-benchmarks/c/pthread/bigshot_s2.i
[2024-12-02 15:50:39,385 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/data/84de339af/a434846368db4c398633bdadaaebbca9/FLAG58281f624
[2024-12-02 15:50:39,686 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/data/84de339af/a434846368db4c398633bdadaaebbca9
[2024-12-02 15:50:39,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 15:50:39,689 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 15:50:39,689 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 15:50:39,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 15:50:39,692 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 15:50:39,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:50:39" (1/1) ...
[2024-12-02 15:50:39,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de1bb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:39, skipping insertion in model container
[2024-12-02 15:50:39,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:50:39" (1/1) ...
[2024-12-02 15:50:39,721 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 15:50:40,027 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 15:50:40,037 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 15:50:40,083 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 15:50:40,146 INFO L204 MainTranslator]: Completed translation
[2024-12-02 15:50:40,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40 WrapperNode
[2024-12-02 15:50:40,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 15:50:40,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 15:50:40,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 15:50:40,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 15:50:40,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,179 INFO L138 Inliner]: procedures = 323, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64
[2024-12-02 15:50:40,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 15:50:40,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 15:50:40,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 15:50:40,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 15:50:40,188 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,191 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,201 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 2, 9]. 69 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 0, 8]. The 1 writes are split as follows [0, 1, 0].
[2024-12-02 15:50:40,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,208 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 15:50:40,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 15:50:40,216 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 15:50:40,216 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 15:50:40,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (1/1) ...
[2024-12-02 15:50:40,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 15:50:40,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:40,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 15:50:40,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 15:50:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0
[2024-12-02 15:50:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1
[2024-12-02 15:50:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2
[2024-12-02 15:50:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-12-02 15:50:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-12-02 15:50:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2
[2024-12-02 15:50:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2024-12-02 15:50:40,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2024-12-02 15:50:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2024-12-02 15:50:40,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2024-12-02 15:50:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0
[2024-12-02 15:50:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1
[2024-12-02 15:50:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2
[2024-12-02 15:50:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-12-02 15:50:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 15:50:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 15:50:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 15:50:40,269 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-12-02 15:50:40,382 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 15:50:40,383 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 15:50:40,584 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-12-02 15:50:40,584 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 15:50:40,718 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 15:50:40,718 INFO L312 CfgBuilder]: Removed 1 assume(true) statements.
[2024-12-02 15:50:40,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:40 BoogieIcfgContainer
[2024-12-02 15:50:40,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 15:50:40,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 15:50:40,721 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 15:50:40,726 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 15:50:40,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:50:39" (1/3) ...
[2024-12-02 15:50:40,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff2fa1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:50:40, skipping insertion in model container
[2024-12-02 15:50:40,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:40" (2/3) ...
[2024-12-02 15:50:40,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff2fa1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:50:40, skipping insertion in model container
[2024-12-02 15:50:40,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:40" (3/3) ...
[2024-12-02 15:50:40,728 INFO L128 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i
[2024-12-02 15:50:40,744 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 15:50:40,745 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bigshot_s2.i that has 3 procedures, 39 locations, 1 initial locations, 1 loop locations, and 10 error locations.
[2024-12-02 15:50:40,745 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-12-02 15:50:40,804 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-12-02 15:50:40,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 100 flow
[2024-12-02 15:50:40,868 INFO L124 PetriNetUnfolderBase]: 5/41 cut-off events.
[2024-12-02 15:50:40,870 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-12-02 15:50:40,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 5/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place.
[2024-12-02 15:50:40,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 43 transitions, 100 flow
[2024-12-02 15:50:40,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 40 transitions, 92 flow
[2024-12-02 15:50:40,884 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 15:50:40,895 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;@4b57a235, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 15:50:40,895 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations.
[2024-12-02 15:50:40,902 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-12-02 15:50:40,902 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events.
[2024-12-02 15:50:40,902 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-12-02 15:50:40,902 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:40,903 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:40,903 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:40,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1089432420, now seen corresponding path program 1 times
[2024-12-02 15:50:40,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:40,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353289837]
[2024-12-02 15:50:40,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:40,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:40,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:40,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:40,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 15:50:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:41,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:41,026 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:41,131 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size
[2024-12-02 15:50:41,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20
[2024-12-02 15:50:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:41,182 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:50:41,183 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:41,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353289837]
[2024-12-02 15:50:41,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353289837] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:41,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:41,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-12-02 15:50:41,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057548507]
[2024-12-02 15:50:41,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:41,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 15:50:41,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:41,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 15:50:41,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-12-02 15:50:41,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 43
[2024-12-02 15:50:41,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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)
[2024-12-02 15:50:41,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:41,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 43
[2024-12-02 15:50:41,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:41,368 INFO L124 PetriNetUnfolderBase]: 8/54 cut-off events.
[2024-12-02 15:50:41,368 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-12-02 15:50:41,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 54 events. 8/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 2 based on Foata normal form. 4/50 useless extension candidates. Maximal degree in co-relation 71. Up to 20 conditions per place.
[2024-12-02 15:50:41,370 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 15 selfloop transitions, 3 changer transitions 0/35 dead transitions.
[2024-12-02 15:50:41,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 118 flow
[2024-12-02 15:50:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 15:50:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-12-02 15:50:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions.
[2024-12-02 15:50:41,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5755813953488372
[2024-12-02 15:50:41,381 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 92 flow. Second operand 4 states and 99 transitions.
[2024-12-02 15:50:41,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 118 flow
[2024-12-02 15:50:41,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-12-02 15:50:41,386 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 78 flow
[2024-12-02 15:50:41,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=34}
[2024-12-02 15:50:41,391 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places.
[2024-12-02 15:50:41,391 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 78 flow
[2024-12-02 15:50:41,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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)
[2024-12-02 15:50:41,392 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:41,392 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:41,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 15:50:41,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:41,596 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:41,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash -587333092, now seen corresponding path program 1 times
[2024-12-02 15:50:41,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:41,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407481517]
[2024-12-02 15:50:41,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:41,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:41,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:41,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:41,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 15:50:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:41,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:41,676 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:41,732 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 15:50:41,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 15:50:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:41,815 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:50:41,815 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:41,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407481517]
[2024-12-02 15:50:41,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407481517] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:41,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:41,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 15:50:41,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387437118]
[2024-12-02 15:50:41,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:41,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:50:41,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:41,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:50:41,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:50:41,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43
[2024-12-02 15:50:41,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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)
[2024-12-02 15:50:41,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:41,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43
[2024-12-02 15:50:41,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:42,033 INFO L124 PetriNetUnfolderBase]: 16/80 cut-off events.
[2024-12-02 15:50:42,033 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES.
[2024-12-02 15:50:42,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 80 events. 16/80 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 183 event pairs, 7 based on Foata normal form. 2/70 useless extension candidates. Maximal degree in co-relation 60. Up to 39 conditions per place.
[2024-12-02 15:50:42,034 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 21 selfloop transitions, 4 changer transitions 0/39 dead transitions.
[2024-12-02 15:50:42,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 140 flow
[2024-12-02 15:50:42,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 15:50:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-12-02 15:50:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions.
[2024-12-02 15:50:42,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5755813953488372
[2024-12-02 15:50:42,036 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 78 flow. Second operand 4 states and 99 transitions.
[2024-12-02 15:50:42,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 140 flow
[2024-12-02 15:50:42,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-12-02 15:50:42,045 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 95 flow
[2024-12-02 15:50:42,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=39, PETRI_TRANSITIONS=36}
[2024-12-02 15:50:42,046 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places.
[2024-12-02 15:50:42,046 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 95 flow
[2024-12-02 15:50:42,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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)
[2024-12-02 15:50:42,047 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:42,047 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:42,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-12-02 15:50:42,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:42,247 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:42,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1027456410, now seen corresponding path program 1 times
[2024-12-02 15:50:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:42,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507266402]
[2024-12-02 15:50:42,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:42,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:42,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:42,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:42,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 15:50:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:42,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:42,319 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:42,328 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 7
[2024-12-02 15:50:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:42,360 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:50:42,360 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:42,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507266402]
[2024-12-02 15:50:42,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507266402] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:42,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:42,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 15:50:42,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133374898]
[2024-12-02 15:50:42,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:42,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 15:50:42,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:42,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 15:50:42,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 15:50:42,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43
[2024-12-02 15:50:42,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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)
[2024-12-02 15:50:42,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:42,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43
[2024-12-02 15:50:42,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:42,493 INFO L124 PetriNetUnfolderBase]: 14/73 cut-off events.
[2024-12-02 15:50:42,493 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES.
[2024-12-02 15:50:42,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 73 events. 14/73 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 1 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 45. Up to 20 conditions per place.
[2024-12-02 15:50:42,494 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 18 selfloop transitions, 4 changer transitions 0/36 dead transitions.
[2024-12-02 15:50:42,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 139 flow
[2024-12-02 15:50:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 15:50:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-12-02 15:50:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions.
[2024-12-02 15:50:42,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5465116279069767
[2024-12-02 15:50:42,496 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 95 flow. Second operand 4 states and 94 transitions.
[2024-12-02 15:50:42,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 139 flow
[2024-12-02 15:50:42,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-12-02 15:50:42,498 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 94 flow
[2024-12-02 15:50:42,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=38, PETRI_TRANSITIONS=34}
[2024-12-02 15:50:42,499 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places.
[2024-12-02 15:50:42,499 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 94 flow
[2024-12-02 15:50:42,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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)
[2024-12-02 15:50:42,500 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:42,500 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:42,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-12-02 15:50:42,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:42,700 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:42,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1787433129, now seen corresponding path program 1 times
[2024-12-02 15:50:42,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:42,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063696372]
[2024-12-02 15:50:42,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:42,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:42,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:42,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:42,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 15:50:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:42,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:42,769 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:42,788 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:50:42,788 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:42,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063696372]
[2024-12-02 15:50:42,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063696372] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:42,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:42,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 15:50:42,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280505585]
[2024-12-02 15:50:42,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:42,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 15:50:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:42,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 15:50:42,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 15:50:42,798 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43
[2024-12-02 15:50:42,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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)
[2024-12-02 15:50:42,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:42,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43
[2024-12-02 15:50:42,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:42,864 INFO L124 PetriNetUnfolderBase]: 11/64 cut-off events.
[2024-12-02 15:50:42,864 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES.
[2024-12-02 15:50:42,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 64 events. 11/64 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 6 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 54. Up to 33 conditions per place.
[2024-12-02 15:50:42,865 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 19 selfloop transitions, 1 changer transitions 0/34 dead transitions.
[2024-12-02 15:50:42,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 134 flow
[2024-12-02 15:50:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 15:50:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-12-02 15:50:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions.
[2024-12-02 15:50:42,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6124031007751938
[2024-12-02 15:50:42,868 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 94 flow. Second operand 3 states and 79 transitions.
[2024-12-02 15:50:42,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 134 flow
[2024-12-02 15:50:42,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 34 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-12-02 15:50:42,869 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 86 flow
[2024-12-02 15:50:42,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=33}
[2024-12-02 15:50:42,870 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places.
[2024-12-02 15:50:42,870 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 86 flow
[2024-12-02 15:50:42,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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)
[2024-12-02 15:50:42,871 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:42,871 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:42,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-12-02 15:50:43,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:43,072 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:43,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1786377378, now seen corresponding path program 1 times
[2024-12-02 15:50:43,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:43,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022665513]
[2024-12-02 15:50:43,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:43,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:43,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:43,074 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:43,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-12-02 15:50:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:43,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:43,143 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:43,153 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
[2024-12-02 15:50:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:43,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:50:43,256 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:43,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022665513]
[2024-12-02 15:50:43,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022665513] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:43,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:43,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 15:50:43,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138512156]
[2024-12-02 15:50:43,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:43,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 15:50:43,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:43,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 15:50:43,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 15:50:43,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 43
[2024-12-02 15:50:43,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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)
[2024-12-02 15:50:43,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:43,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 43
[2024-12-02 15:50:43,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:43,414 INFO L124 PetriNetUnfolderBase]: 12/61 cut-off events.
[2024-12-02 15:50:43,414 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES.
[2024-12-02 15:50:43,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 61 events. 12/61 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 5 based on Foata normal form. 2/60 useless extension candidates. Maximal degree in co-relation 101. Up to 30 conditions per place.
[2024-12-02 15:50:43,415 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 19 selfloop transitions, 4 changer transitions 0/35 dead transitions.
[2024-12-02 15:50:43,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 136 flow
[2024-12-02 15:50:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 15:50:43,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-12-02 15:50:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions.
[2024-12-02 15:50:43,416 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5872093023255814
[2024-12-02 15:50:43,416 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 86 flow. Second operand 4 states and 101 transitions.
[2024-12-02 15:50:43,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 136 flow
[2024-12-02 15:50:43,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-12-02 15:50:43,417 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 96 flow
[2024-12-02 15:50:43,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=32}
[2024-12-02 15:50:43,418 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places.
[2024-12-02 15:50:43,418 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 96 flow
[2024-12-02 15:50:43,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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)
[2024-12-02 15:50:43,418 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:43,419 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:43,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-12-02 15:50:43,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:43,619 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:43,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:43,620 INFO L85 PathProgramCache]: Analyzing trace with hash 53525603, now seen corresponding path program 1 times
[2024-12-02 15:50:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:43,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506798913]
[2024-12-02 15:50:43,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:43,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:43,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:43,622 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:43,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-12-02 15:50:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:43,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:43,689 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:43,710 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2024-12-02 15:50:43,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14
[2024-12-02 15:50:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:43,959 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:44,151 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:44,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506798913]
[2024-12-02 15:50:44,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506798913] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:44,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 15:50:44,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8
[2024-12-02 15:50:44,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595608812]
[2024-12-02 15:50:44,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:44,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-12-02 15:50:44,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:44,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-12-02 15:50:44,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-12-02 15:50:44,404 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43
[2024-12-02 15:50:44,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 96 flow. Second operand has 10 states, 10 states have (on average 20.4) internal successors, (204), 10 states have internal predecessors, (204), 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)
[2024-12-02 15:50:44,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:44,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43
[2024-12-02 15:50:44,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:44,806 INFO L124 PetriNetUnfolderBase]: 25/114 cut-off events.
[2024-12-02 15:50:44,806 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES.
[2024-12-02 15:50:44,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 114 events. 25/114 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 3 based on Foata normal form. 12/124 useless extension candidates. Maximal degree in co-relation 209. Up to 26 conditions per place.
[2024-12-02 15:50:44,807 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 25 selfloop transitions, 13 changer transitions 0/48 dead transitions.
[2024-12-02 15:50:44,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 210 flow
[2024-12-02 15:50:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-12-02 15:50:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2024-12-02 15:50:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions.
[2024-12-02 15:50:44,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5322997416020672
[2024-12-02 15:50:44,809 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 96 flow. Second operand 9 states and 206 transitions.
[2024-12-02 15:50:44,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 210 flow
[2024-12-02 15:50:44,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-12-02 15:50:44,811 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 139 flow
[2024-12-02 15:50:44,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=139, PETRI_PLACES=44, PETRI_TRANSITIONS=36}
[2024-12-02 15:50:44,812 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places.
[2024-12-02 15:50:44,812 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 139 flow
[2024-12-02 15:50:44,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 10 states have internal predecessors, (204), 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)
[2024-12-02 15:50:44,812 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:44,812 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:44,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-12-02 15:50:45,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:45,013 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:45,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:45,013 INFO L85 PathProgramCache]: Analyzing trace with hash -101494811, now seen corresponding path program 1 times
[2024-12-02 15:50:45,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:45,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385189654]
[2024-12-02 15:50:45,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:45,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:45,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:45,015 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:45,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-12-02 15:50:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:45,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:45,077 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:45,086 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
[2024-12-02 15:50:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:45,214 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:45,300 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:45,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385189654]
[2024-12-02 15:50:45,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385189654] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:45,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 15:50:45,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7
[2024-12-02 15:50:45,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245575148]
[2024-12-02 15:50:45,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:45,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-12-02 15:50:45,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:45,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-12-02 15:50:45,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-12-02 15:50:45,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43
[2024-12-02 15:50:45,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 139 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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)
[2024-12-02 15:50:45,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:45,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43
[2024-12-02 15:50:45,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:45,707 INFO L124 PetriNetUnfolderBase]: 25/111 cut-off events.
[2024-12-02 15:50:45,707 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES.
[2024-12-02 15:50:45,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 111 events. 25/111 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 176 event pairs, 4 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 227. Up to 29 conditions per place.
[2024-12-02 15:50:45,707 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 26 selfloop transitions, 11 changer transitions 0/48 dead transitions.
[2024-12-02 15:50:45,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 237 flow
[2024-12-02 15:50:45,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 15:50:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-12-02 15:50:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions.
[2024-12-02 15:50:45,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5514950166112956
[2024-12-02 15:50:45,710 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 139 flow. Second operand 7 states and 166 transitions.
[2024-12-02 15:50:45,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 237 flow
[2024-12-02 15:50:45,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 214 flow, removed 7 selfloop flow, removed 4 redundant places.
[2024-12-02 15:50:45,711 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 166 flow
[2024-12-02 15:50:45,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=166, PETRI_PLACES=50, PETRI_TRANSITIONS=37}
[2024-12-02 15:50:45,712 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places.
[2024-12-02 15:50:45,712 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 166 flow
[2024-12-02 15:50:45,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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)
[2024-12-02 15:50:45,713 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:45,713 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:45,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-12-02 15:50:45,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:45,913 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:45,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:45,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1462115297, now seen corresponding path program 1 times
[2024-12-02 15:50:45,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:45,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031839034]
[2024-12-02 15:50:45,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:45,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:45,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:45,916 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:45,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-12-02 15:50:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:45,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:45,982 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:46,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 15:50:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:46,070 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 15:50:46,070 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:46,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031839034]
[2024-12-02 15:50:46,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031839034] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 15:50:46,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 15:50:46,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 15:50:46,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651647099]
[2024-12-02 15:50:46,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 15:50:46,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 15:50:46,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:46,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 15:50:46,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 15:50:46,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43
[2024-12-02 15:50:46,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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)
[2024-12-02 15:50:46,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:46,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43
[2024-12-02 15:50:46,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:46,203 INFO L124 PetriNetUnfolderBase]: 21/109 cut-off events.
[2024-12-02 15:50:46,203 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES.
[2024-12-02 15:50:46,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 109 events. 21/109 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 12 based on Foata normal form. 2/109 useless extension candidates. Maximal degree in co-relation 244. Up to 51 conditions per place.
[2024-12-02 15:50:46,205 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 23 selfloop transitions, 5 changer transitions 0/41 dead transitions.
[2024-12-02 15:50:46,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 41 transitions, 223 flow
[2024-12-02 15:50:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 15:50:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-12-02 15:50:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions.
[2024-12-02 15:50:46,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.562015503875969
[2024-12-02 15:50:46,207 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 166 flow. Second operand 6 states and 145 transitions.
[2024-12-02 15:50:46,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 41 transitions, 223 flow
[2024-12-02 15:50:46,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 210 flow, removed 0 selfloop flow, removed 5 redundant places.
[2024-12-02 15:50:46,209 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 164 flow
[2024-12-02 15:50:46,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=51, PETRI_TRANSITIONS=38}
[2024-12-02 15:50:46,210 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places.
[2024-12-02 15:50:46,210 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 164 flow
[2024-12-02 15:50:46,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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)
[2024-12-02 15:50:46,211 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:46,211 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:46,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-12-02 15:50:46,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:46,411 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:46,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:46,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1402395310, now seen corresponding path program 1 times
[2024-12-02 15:50:46,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:46,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965670292]
[2024-12-02 15:50:46,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 15:50:46,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:46,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:46,414 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:46,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-12-02 15:50:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 15:50:46,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:46,479 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:46,494 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
[2024-12-02 15:50:46,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 15:50:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:46,803 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:47,070 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:47,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965670292]
[2024-12-02 15:50:47,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965670292] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:47,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 15:50:47,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2024-12-02 15:50:47,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652868159]
[2024-12-02 15:50:47,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:47,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-12-02 15:50:47,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:47,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-12-02 15:50:47,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2024-12-02 15:50:47,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43
[2024-12-02 15:50:47,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 164 flow. Second operand has 14 states, 14 states have (on average 19.5) internal successors, (273), 14 states have internal predecessors, (273), 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)
[2024-12-02 15:50:47,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:47,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43
[2024-12-02 15:50:47,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:47,976 INFO L124 PetriNetUnfolderBase]: 23/109 cut-off events.
[2024-12-02 15:50:47,976 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES.
[2024-12-02 15:50:47,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 109 events. 23/109 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 172 event pairs, 6 based on Foata normal form. 2/109 useless extension candidates. Maximal degree in co-relation 258. Up to 31 conditions per place.
[2024-12-02 15:50:47,977 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 27 selfloop transitions, 11 changer transitions 0/48 dead transitions.
[2024-12-02 15:50:47,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 48 transitions, 262 flow
[2024-12-02 15:50:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-12-02 15:50:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-12-02 15:50:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions.
[2024-12-02 15:50:47,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4790697674418605
[2024-12-02 15:50:47,979 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 164 flow. Second operand 10 states and 206 transitions.
[2024-12-02 15:50:47,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 48 transitions, 262 flow
[2024-12-02 15:50:47,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 48 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-12-02 15:50:47,980 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 183 flow
[2024-12-02 15:50:47,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=38}
[2024-12-02 15:50:47,981 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places.
[2024-12-02 15:50:47,981 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 183 flow
[2024-12-02 15:50:47,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.5) internal successors, (273), 14 states have internal predecessors, (273), 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)
[2024-12-02 15:50:47,981 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:47,981 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:47,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-12-02 15:50:48,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:48,182 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:48,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:48,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1063418841, now seen corresponding path program 2 times
[2024-12-02 15:50:48,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:48,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295064558]
[2024-12-02 15:50:48,183 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:50:48,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:48,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:48,184 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:48,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-12-02 15:50:48,273 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:50:48,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:48,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:48,277 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:48,289 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
[2024-12-02 15:50:48,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 15:50:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:48,737 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:49,123 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:49,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295064558]
[2024-12-02 15:50:49,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295064558] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:49,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 15:50:49,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15
[2024-12-02 15:50:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841915069]
[2024-12-02 15:50:49,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:49,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-12-02 15:50:49,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:49,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-12-02 15:50:49,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240
[2024-12-02 15:50:49,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43
[2024-12-02 15:50:49,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 183 flow. Second operand has 16 states, 16 states have (on average 19.5625) internal successors, (313), 16 states have internal predecessors, (313), 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)
[2024-12-02 15:50:49,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:49,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43
[2024-12-02 15:50:49,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:50,509 INFO L124 PetriNetUnfolderBase]: 21/107 cut-off events.
[2024-12-02 15:50:50,509 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES.
[2024-12-02 15:50:50,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 107 events. 21/107 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 4 based on Foata normal form. 2/107 useless extension candidates. Maximal degree in co-relation 270. Up to 25 conditions per place.
[2024-12-02 15:50:50,510 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 28 selfloop transitions, 12 changer transitions 0/50 dead transitions.
[2024-12-02 15:50:50,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 50 transitions, 291 flow
[2024-12-02 15:50:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-12-02 15:50:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2024-12-02 15:50:50,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 245 transitions.
[2024-12-02 15:50:50,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4748062015503876
[2024-12-02 15:50:50,513 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 183 flow. Second operand 12 states and 245 transitions.
[2024-12-02 15:50:50,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 50 transitions, 291 flow
[2024-12-02 15:50:50,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 261 flow, removed 6 selfloop flow, removed 9 redundant places.
[2024-12-02 15:50:50,516 INFO L231 Difference]: Finished difference. Result has 62 places, 38 transitions, 179 flow
[2024-12-02 15:50:50,516 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=179, PETRI_PLACES=62, PETRI_TRANSITIONS=38}
[2024-12-02 15:50:50,517 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places.
[2024-12-02 15:50:50,517 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 38 transitions, 179 flow
[2024-12-02 15:50:50,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.5625) internal successors, (313), 16 states have internal predecessors, (313), 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)
[2024-12-02 15:50:50,517 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:50,517 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:50,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-12-02 15:50:50,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:50,718 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:50,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:50,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2046409800, now seen corresponding path program 2 times
[2024-12-02 15:50:50,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:50,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315132361]
[2024-12-02 15:50:50,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:50:50,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:50,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:50,720 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:50,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-12-02 15:50:50,794 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 15:50:50,794 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:50,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:50,798 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:50,819 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2024-12-02 15:50:50,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14
[2024-12-02 15:50:51,363 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:51,363 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:52,201 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315132361]
[2024-12-02 15:50:52,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315132361] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:52,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 15:50:52,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17
[2024-12-02 15:50:52,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437963196]
[2024-12-02 15:50:52,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:52,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-12-02 15:50:52,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:52,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-12-02 15:50:52,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342
[2024-12-02 15:50:53,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43
[2024-12-02 15:50:53,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 38 transitions, 179 flow. Second operand has 19 states, 19 states have (on average 17.63157894736842) internal successors, (335), 19 states have internal predecessors, (335), 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)
[2024-12-02 15:50:53,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:53,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43
[2024-12-02 15:50:53,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:55,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-12-02 15:50:56,309 INFO L124 PetriNetUnfolderBase]: 68/239 cut-off events.
[2024-12-02 15:50:56,309 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES.
[2024-12-02 15:50:56,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 239 events. 68/239 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 355 event pairs, 3 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 727. Up to 50 conditions per place.
[2024-12-02 15:50:56,311 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 58 selfloop transitions, 27 changer transitions 0/93 dead transitions.
[2024-12-02 15:50:56,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 652 flow
[2024-12-02 15:50:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-12-02 15:50:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2024-12-02 15:50:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 360 transitions.
[2024-12-02 15:50:56,313 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744
[2024-12-02 15:50:56,313 INFO L175 Difference]: Start difference. First operand has 62 places, 38 transitions, 179 flow. Second operand 18 states and 360 transitions.
[2024-12-02 15:50:56,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 652 flow
[2024-12-02 15:50:56,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 600 flow, removed 0 selfloop flow, removed 9 redundant places.
[2024-12-02 15:50:56,317 INFO L231 Difference]: Finished difference. Result has 78 places, 57 transitions, 414 flow
[2024-12-02 15:50:56,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=414, PETRI_PLACES=78, PETRI_TRANSITIONS=57}
[2024-12-02 15:50:56,318 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places.
[2024-12-02 15:50:56,318 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 57 transitions, 414 flow
[2024-12-02 15:50:56,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.63157894736842) internal successors, (335), 19 states have internal predecessors, (335), 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)
[2024-12-02 15:50:56,318 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:56,318 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:56,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-12-02 15:50:56,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:56,519 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:56,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:56,519 INFO L85 PathProgramCache]: Analyzing trace with hash 495212026, now seen corresponding path program 2 times
[2024-12-02 15:50:56,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:56,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946155323]
[2024-12-02 15:50:56,520 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 15:50:56,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:56,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:56,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:56,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-12-02 15:50:56,585 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-12-02 15:50:56,585 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:56,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:56,588 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:56,613 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2024-12-02 15:50:56,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14
[2024-12-02 15:50:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked.
[2024-12-02 15:50:57,058 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:50:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked.
[2024-12-02 15:50:57,517 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:50:57,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946155323]
[2024-12-02 15:50:57,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946155323] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:50:57,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 15:50:57,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8
[2024-12-02 15:50:57,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431255675]
[2024-12-02 15:50:57,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:50:57,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-12-02 15:50:57,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:50:57,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-12-02 15:50:57,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2024-12-02 15:50:58,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43
[2024-12-02 15:50:58,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 57 transitions, 414 flow. Second operand has 10 states, 10 states have (on average 19.8) internal successors, (198), 10 states have internal predecessors, (198), 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)
[2024-12-02 15:50:58,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:50:58,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43
[2024-12-02 15:50:58,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:50:58,906 INFO L124 PetriNetUnfolderBase]: 60/222 cut-off events.
[2024-12-02 15:50:58,907 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES.
[2024-12-02 15:50:58,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 222 events. 60/222 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 311 event pairs, 2 based on Foata normal form. 12/234 useless extension candidates. Maximal degree in co-relation 732. Up to 95 conditions per place.
[2024-12-02 15:50:58,908 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 24 selfloop transitions, 24 changer transitions 0/58 dead transitions.
[2024-12-02 15:50:58,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 58 transitions, 488 flow
[2024-12-02 15:50:58,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 15:50:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-12-02 15:50:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions.
[2024-12-02 15:50:58,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558
[2024-12-02 15:50:58,910 INFO L175 Difference]: Start difference. First operand has 78 places, 57 transitions, 414 flow. Second operand 6 states and 126 transitions.
[2024-12-02 15:50:58,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 58 transitions, 488 flow
[2024-12-02 15:50:58,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 58 transitions, 461 flow, removed 0 selfloop flow, removed 6 redundant places.
[2024-12-02 15:50:58,913 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 423 flow
[2024-12-02 15:50:58,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=423, PETRI_PLACES=74, PETRI_TRANSITIONS=55}
[2024-12-02 15:50:58,914 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places.
[2024-12-02 15:50:58,914 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 423 flow
[2024-12-02 15:50:58,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.8) internal successors, (198), 10 states have internal predecessors, (198), 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)
[2024-12-02 15:50:58,914 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:50:58,914 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:50:58,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-12-02 15:50:59,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:59,115 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:50:59,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:50:59,115 INFO L85 PathProgramCache]: Analyzing trace with hash -241182796, now seen corresponding path program 3 times
[2024-12-02 15:50:59,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:50:59,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559230780]
[2024-12-02 15:50:59,115 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:50:59,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:50:59,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:50:59,117 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:50:59,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-12-02 15:50:59,215 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2024-12-02 15:50:59,215 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:50:59,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-12-02 15:50:59,221 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:50:59,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 15:50:59,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 15:50:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:50:59,827 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:51:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:51:00,317 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:51:00,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559230780]
[2024-12-02 15:51:00,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559230780] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:51:00,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 15:51:00,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17
[2024-12-02 15:51:00,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109200071]
[2024-12-02 15:51:00,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:51:00,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-12-02 15:51:00,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:51:00,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-12-02 15:51:00,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306
[2024-12-02 15:51:01,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43
[2024-12-02 15:51:01,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 423 flow. Second operand has 18 states, 18 states have (on average 19.555555555555557) internal successors, (352), 18 states have internal predecessors, (352), 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)
[2024-12-02 15:51:01,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:51:01,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43
[2024-12-02 15:51:01,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:51:02,122 INFO L124 PetriNetUnfolderBase]: 54/214 cut-off events.
[2024-12-02 15:51:02,122 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES.
[2024-12-02 15:51:02,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 214 events. 54/214 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 297 event pairs, 14 based on Foata normal form. 2/216 useless extension candidates. Maximal degree in co-relation 738. Up to 63 conditions per place.
[2024-12-02 15:51:02,124 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 37 selfloop transitions, 18 changer transitions 0/69 dead transitions.
[2024-12-02 15:51:02,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 69 transitions, 566 flow
[2024-12-02 15:51:02,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-12-02 15:51:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-12-02 15:51:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 265 transitions.
[2024-12-02 15:51:02,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4740608228980322
[2024-12-02 15:51:02,127 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 423 flow. Second operand 13 states and 265 transitions.
[2024-12-02 15:51:02,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 69 transitions, 566 flow
[2024-12-02 15:51:02,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 69 transitions, 534 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-12-02 15:51:02,132 INFO L231 Difference]: Finished difference. Result has 83 places, 55 transitions, 423 flow
[2024-12-02 15:51:02,132 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=423, PETRI_PLACES=83, PETRI_TRANSITIONS=55}
[2024-12-02 15:51:02,133 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places.
[2024-12-02 15:51:02,133 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 55 transitions, 423 flow
[2024-12-02 15:51:02,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.555555555555557) internal successors, (352), 18 states have internal predecessors, (352), 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)
[2024-12-02 15:51:02,133 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:51:02,133 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:51:02,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-12-02 15:51:02,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:51:02,334 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:51:02,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:51:02,334 INFO L85 PathProgramCache]: Analyzing trace with hash -508734169, now seen corresponding path program 4 times
[2024-12-02 15:51:02,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:51:02,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856862749]
[2024-12-02 15:51:02,334 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 15:51:02,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:51:02,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:51:02,336 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:51:02,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-12-02 15:51:02,432 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 15:51:02,432 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:51:02,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-12-02 15:51:02,437 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:51:02,458 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
[2024-12-02 15:51:03,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 15:51:03,377 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:51:03,377 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:51:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:51:04,053 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:51:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856862749]
[2024-12-02 15:51:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856862749] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:51:04,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 15:51:04,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19
[2024-12-02 15:51:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282066164]
[2024-12-02 15:51:04,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:51:04,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-12-02 15:51:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:51:04,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-12-02 15:51:04,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380
[2024-12-02 15:51:05,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43
[2024-12-02 15:51:05,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 55 transitions, 423 flow. Second operand has 20 states, 20 states have (on average 19.65) internal successors, (393), 20 states have internal predecessors, (393), 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)
[2024-12-02 15:51:05,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:51:05,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43
[2024-12-02 15:51:05,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:51:08,706 INFO L124 PetriNetUnfolderBase]: 48/214 cut-off events.
[2024-12-02 15:51:08,707 INFO L125 PetriNetUnfolderBase]: For 731/731 co-relation queries the response was YES.
[2024-12-02 15:51:08,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 214 events. 48/214 cut-off events. For 731/731 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 292 event pairs, 4 based on Foata normal form. 6/220 useless extension candidates. Maximal degree in co-relation 752. Up to 40 conditions per place.
[2024-12-02 15:51:08,708 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 49 selfloop transitions, 27 changer transitions 0/90 dead transitions.
[2024-12-02 15:51:08,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 90 transitions, 721 flow
[2024-12-02 15:51:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-12-02 15:51:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2024-12-02 15:51:08,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 487 transitions.
[2024-12-02 15:51:08,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47189922480620156
[2024-12-02 15:51:08,711 INFO L175 Difference]: Start difference. First operand has 83 places, 55 transitions, 423 flow. Second operand 24 states and 487 transitions.
[2024-12-02 15:51:08,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 90 transitions, 721 flow
[2024-12-02 15:51:08,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 671 flow, removed 0 selfloop flow, removed 11 redundant places.
[2024-12-02 15:51:08,717 INFO L231 Difference]: Finished difference. Result has 99 places, 60 transitions, 482 flow
[2024-12-02 15:51:08,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=482, PETRI_PLACES=99, PETRI_TRANSITIONS=60}
[2024-12-02 15:51:08,718 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places.
[2024-12-02 15:51:08,718 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 60 transitions, 482 flow
[2024-12-02 15:51:08,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.65) internal successors, (393), 20 states have internal predecessors, (393), 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)
[2024-12-02 15:51:08,718 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:51:08,719 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:51:08,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-12-02 15:51:08,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:51:08,919 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:51:08,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:51:08,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2060058242, now seen corresponding path program 5 times
[2024-12-02 15:51:08,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:51:08,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723568266]
[2024-12-02 15:51:08,920 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 15:51:08,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:51:08,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:51:08,921 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:51:08,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-12-02 15:51:09,095 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2024-12-02 15:51:09,095 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:51:09,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-12-02 15:51:09,100 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:51:09,120 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
[2024-12-02 15:51:10,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 15:51:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:51:10,145 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:51:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:51:11,024 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:51:11,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723568266]
[2024-12-02 15:51:11,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723568266] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:51:11,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 15:51:11,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21
[2024-12-02 15:51:11,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994659441]
[2024-12-02 15:51:11,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:51:11,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-12-02 15:51:11,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:51:11,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-12-02 15:51:11,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462
[2024-12-02 15:51:12,969 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43
[2024-12-02 15:51:12,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 60 transitions, 482 flow. Second operand has 22 states, 22 states have (on average 19.636363636363637) internal successors, (432), 22 states have internal predecessors, (432), 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)
[2024-12-02 15:51:12,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:51:12,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43
[2024-12-02 15:51:12,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:51:15,829 INFO L124 PetriNetUnfolderBase]: 51/243 cut-off events.
[2024-12-02 15:51:15,830 INFO L125 PetriNetUnfolderBase]: For 1108/1108 co-relation queries the response was YES.
[2024-12-02 15:51:15,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 243 events. 51/243 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 330 event pairs, 4 based on Foata normal form. 6/249 useless extension candidates. Maximal degree in co-relation 906. Up to 45 conditions per place.
[2024-12-02 15:51:15,831 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 54 selfloop transitions, 30 changer transitions 0/98 dead transitions.
[2024-12-02 15:51:15,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 98 transitions, 832 flow
[2024-12-02 15:51:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2024-12-02 15:51:15,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2024-12-02 15:51:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 563 transitions.
[2024-12-02 15:51:15,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4676079734219269
[2024-12-02 15:51:15,834 INFO L175 Difference]: Start difference. First operand has 99 places, 60 transitions, 482 flow. Second operand 28 states and 563 transitions.
[2024-12-02 15:51:15,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 98 transitions, 832 flow
[2024-12-02 15:51:15,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 98 transitions, 795 flow, removed 2 selfloop flow, removed 16 redundant places.
[2024-12-02 15:51:15,841 INFO L231 Difference]: Finished difference. Result has 116 places, 64 transitions, 579 flow
[2024-12-02 15:51:15,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=579, PETRI_PLACES=116, PETRI_TRANSITIONS=64}
[2024-12-02 15:51:15,842 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places.
[2024-12-02 15:51:15,842 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 64 transitions, 579 flow
[2024-12-02 15:51:15,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 19.636363636363637) internal successors, (432), 22 states have internal predecessors, (432), 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)
[2024-12-02 15:51:15,842 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:51:15,842 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:51:15,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-12-02 15:51:16,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:51:16,043 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:51:16,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:51:16,043 INFO L85 PathProgramCache]: Analyzing trace with hash -501616631, now seen corresponding path program 6 times
[2024-12-02 15:51:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:51:16,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281484775]
[2024-12-02 15:51:16,044 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 15:51:16,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:51:16,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:51:16,045 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:51:16,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-12-02 15:51:16,193 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2024-12-02 15:51:16,193 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:51:16,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-12-02 15:51:16,198 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:51:16,218 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
[2024-12-02 15:51:17,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 15:51:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:51:17,438 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:51:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 15:51:18,461 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:51:18,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281484775]
[2024-12-02 15:51:18,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281484775] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:51:18,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 15:51:18,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23
[2024-12-02 15:51:18,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091698365]
[2024-12-02 15:51:18,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:51:18,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-12-02 15:51:18,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:51:18,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-12-02 15:51:18,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552
[2024-12-02 15:51:20,270 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43
[2024-12-02 15:51:20,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 64 transitions, 579 flow. Second operand has 24 states, 24 states have (on average 19.666666666666668) internal successors, (472), 24 states have internal predecessors, (472), 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)
[2024-12-02 15:51:20,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:51:20,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43
[2024-12-02 15:51:20,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:51:24,058 INFO L124 PetriNetUnfolderBase]: 54/272 cut-off events.
[2024-12-02 15:51:24,058 INFO L125 PetriNetUnfolderBase]: For 1678/1678 co-relation queries the response was YES.
[2024-12-02 15:51:24,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 272 events. 54/272 cut-off events. For 1678/1678 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 368 event pairs, 4 based on Foata normal form. 6/278 useless extension candidates. Maximal degree in co-relation 1100. Up to 50 conditions per place.
[2024-12-02 15:51:24,060 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 59 selfloop transitions, 33 changer transitions 0/106 dead transitions.
[2024-12-02 15:51:24,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 106 transitions, 983 flow
[2024-12-02 15:51:24,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2024-12-02 15:51:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2024-12-02 15:51:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 639 transitions.
[2024-12-02 15:51:24,062 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4643895348837209
[2024-12-02 15:51:24,062 INFO L175 Difference]: Start difference. First operand has 116 places, 64 transitions, 579 flow. Second operand 32 states and 639 transitions.
[2024-12-02 15:51:24,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 106 transitions, 983 flow
[2024-12-02 15:51:24,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 106 transitions, 929 flow, removed 6 selfloop flow, removed 21 redundant places.
[2024-12-02 15:51:24,072 INFO L231 Difference]: Finished difference. Result has 132 places, 68 transitions, 682 flow
[2024-12-02 15:51:24,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=682, PETRI_PLACES=132, PETRI_TRANSITIONS=68}
[2024-12-02 15:51:24,072 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places.
[2024-12-02 15:51:24,073 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 68 transitions, 682 flow
[2024-12-02 15:51:24,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.666666666666668) internal successors, (472), 24 states have internal predecessors, (472), 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)
[2024-12-02 15:51:24,073 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:51:24,073 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:51:24,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2024-12-02 15:51:24,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:51:24,273 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:51:24,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:51:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1745514836, now seen corresponding path program 3 times
[2024-12-02 15:51:24,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:51:24,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386940784]
[2024-12-02 15:51:24,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 15:51:24,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:51:24,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:51:24,276 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:51:24,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-12-02 15:51:24,341 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 15:51:24,342 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 15:51:24,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-12-02 15:51:24,345 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 15:51:24,396 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size
[2024-12-02 15:51:24,396 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 13 treesize of output 13
[2024-12-02 15:51:24,407 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 12 treesize of output 14
[2024-12-02 15:51:25,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 15:51:25,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17
[2024-12-02 15:51:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked.
[2024-12-02 15:51:25,796 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 15:51:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked.
[2024-12-02 15:51:31,191 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 15:51:31,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386940784]
[2024-12-02 15:51:31,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386940784] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 15:51:31,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 15:51:31,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12
[2024-12-02 15:51:31,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579667300]
[2024-12-02 15:51:31,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 15:51:31,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-12-02 15:51:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 15:51:31,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-12-02 15:51:31,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182
[2024-12-02 15:51:32,392 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43
[2024-12-02 15:51:32,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 68 transitions, 682 flow. Second operand has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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)
[2024-12-02 15:51:32,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 15:51:32,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43
[2024-12-02 15:51:32,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 15:51:33,596 INFO L124 PetriNetUnfolderBase]: 84/290 cut-off events.
[2024-12-02 15:51:33,596 INFO L125 PetriNetUnfolderBase]: For 1748/1748 co-relation queries the response was YES.
[2024-12-02 15:51:33,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 290 events. 84/290 cut-off events. For 1748/1748 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 337 event pairs, 2 based on Foata normal form. 12/302 useless extension candidates. Maximal degree in co-relation 1208. Up to 170 conditions per place.
[2024-12-02 15:51:33,598 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 34 selfloop transitions, 32 changer transitions 0/72 dead transitions.
[2024-12-02 15:51:33,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 72 transitions, 802 flow
[2024-12-02 15:51:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 15:51:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-12-02 15:51:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions.
[2024-12-02 15:51:33,599 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855
[2024-12-02 15:51:33,599 INFO L175 Difference]: Start difference. First operand has 132 places, 68 transitions, 682 flow. Second operand 7 states and 129 transitions.
[2024-12-02 15:51:33,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 72 transitions, 802 flow
[2024-12-02 15:51:33,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 72 transitions, 716 flow, removed 10 selfloop flow, removed 29 redundant places.
[2024-12-02 15:51:33,607 INFO L231 Difference]: Finished difference. Result has 107 places, 66 transitions, 634 flow
[2024-12-02 15:51:33,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=634, PETRI_PLACES=107, PETRI_TRANSITIONS=66}
[2024-12-02 15:51:33,608 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places.
[2024-12-02 15:51:33,608 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 66 transitions, 634 flow
[2024-12-02 15:51:33,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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)
[2024-12-02 15:51:33,608 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 15:51:33,608 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:51:33,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-12-02 15:51:33,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:51:33,809 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] ===
[2024-12-02 15:51:33,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 15:51:33,809 INFO L85 PathProgramCache]: Analyzing trace with hash -178626480, now seen corresponding path program 7 times
[2024-12-02 15:51:33,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 15:51:33,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564801620]
[2024-12-02 15:51:33,809 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 15:51:33,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:51:33,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 15:51:33,811 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 15:51:33,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-12-02 15:51:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-12-02 15:51:34,048 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-12-02 15:51:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-12-02 15:51:34,781 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace
[2024-12-02 15:51:34,782 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-12-02 15:51:34,782 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining)
[2024-12-02 15:51:34,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining)
[2024-12-02 15:51:34,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining)
[2024-12-02 15:51:34,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (8 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining)
[2024-12-02 15:51:34,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining)
[2024-12-02 15:51:34,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2024-12-02 15:51:34,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 15:51:34,986 INFO L422 BasicCegarLoop]: Path program histogram: [7, 3, 2, 1, 1, 1, 1, 1, 1]
[2024-12-02 15:51:35,036 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2024-12-02 15:51:35,036 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-12-02 15:51:35,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:51:35 BasicIcfg
[2024-12-02 15:51:35,040 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-12-02 15:51:35,041 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-12-02 15:51:35,041 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-12-02 15:51:35,041 INFO L274 PluginConnector]: Witness Printer initialized
[2024-12-02 15:51:35,042 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:40" (3/4) ...
[2024-12-02 15:51:35,044 INFO L149 WitnessPrinter]: No result that supports witness generation found
[2024-12-02 15:51:35,044 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-12-02 15:51:35,045 INFO L158 Benchmark]: Toolchain (without parser) took 55356.39ms. Allocated memory was 92.3MB in the beginning and 142.6MB in the end (delta: 50.3MB). Free memory was 67.9MB in the beginning and 87.5MB in the end (delta: -19.5MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB.
[2024-12-02 15:51:35,045 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:51:35,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.07ms. Allocated memory is still 92.3MB. Free memory was 67.7MB in the beginning and 63.0MB in the end (delta: 4.7MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB.
[2024-12-02 15:51:35,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.67ms. Allocated memory is still 92.3MB. Free memory was 63.0MB in the beginning and 60.7MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:51:35,046 INFO L158 Benchmark]: Boogie Preprocessor took 35.48ms. Allocated memory is still 92.3MB. Free memory was 60.7MB in the beginning and 58.6MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 15:51:35,047 INFO L158 Benchmark]: RCFGBuilder took 502.86ms. Allocated memory is still 92.3MB. Free memory was 58.6MB in the beginning and 58.0MB in the end (delta: 552.5kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB.
[2024-12-02 15:51:35,047 INFO L158 Benchmark]: TraceAbstraction took 54319.52ms. Allocated memory was 92.3MB in the beginning and 142.6MB in the end (delta: 50.3MB). Free memory was 57.2MB in the beginning and 87.5MB in the end (delta: -30.3MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB.
[2024-12-02 15:51:35,047 INFO L158 Benchmark]: Witness Printer took 3.37ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 87.5MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 15:51:35,048 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 457.07ms. Allocated memory is still 92.3MB. Free memory was 67.7MB in the beginning and 63.0MB in the end (delta: 4.7MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 32.67ms. Allocated memory is still 92.3MB. Free memory was 63.0MB in the beginning and 60.7MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 35.48ms. Allocated memory is still 92.3MB. Free memory was 60.7MB in the beginning and 58.6MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 502.86ms. Allocated memory is still 92.3MB. Free memory was 58.6MB in the beginning and 58.0MB in the end (delta: 552.5kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB.
* TraceAbstraction took 54319.52ms. Allocated memory was 92.3MB in the beginning and 142.6MB in the end (delta: 50.3MB). Free memory was 57.2MB in the beginning and 87.5MB in the end (delta: -30.3MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB.
* Witness Printer took 3.37ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 87.5MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 1119]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: overapproximation of memtrack at line 1119.
Possible FailurePath:
[L1108] 0 char *v;
[L1121] 0 pthread_t t1, t2;
[L1122] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0)
VAL [\old(arg)={0:0}, t1=0, v={0:0}]
[L1111] 1 v = malloc(sizeof(char) * 8)
[L1112] 1 return 0;
[L1123] FCALL, JOIN 1 pthread_join(t1, 0)
VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, t1=0, v={4:0}]
[L1124] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0)
VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, t1=0, t2=1, v={4:0}]
[L1116] COND TRUE 2 \read(*v)
[L1116] FCALL 2 strcpy(v, "Bigshot")
[L1117] 2 return 0;
[L1125] FCALL, JOIN 2 pthread_join(t2, 0)
VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, t1=0, t2=1, v={4:0}]
[L1126] EXPR 0 v[0]
[L1126] CALL 0 __VERIFIER_assert(v[0] == 'B')
[L1107] COND FALSE 0 !(!expression)
VAL [\old(arg)={0:0}, \old(expression)=1, \result={0:0}, arg={0:0}, expression=1, v={4:0}]
[L1126] RET 0 __VERIFIER_assert(v[0] == 'B')
[L1127] 0 return 0;
VAL [\old(arg)={0:0}, \result=0, \result={0:0}, arg={0:0}, t1=0, t2=1, v={4:0}]
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: Not analyzed.
- UnprovableResult [Line: 1122]: Unable to prove that petrification did provide enough thread instances (tool internal message)
Unable to prove that petrification did provide enough thread instances (tool internal message)
Reason: Not analyzed.
- UnprovableResult [Line: 1124]: Unable to prove that petrification did provide enough thread instances (tool internal message)
Unable to prove that petrification did provide enough thread instances (tool internal message)
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 60 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 54.2s, OverallIterations: 18, TraceHistogramMax: 9, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 29.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2720 SdHoareTripleChecker+Valid, 19.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2407 mSDsluCounter, 2175 SdHoareTripleChecker+Invalid, 17.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2071 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9903 IncrementalHoareTripleChecker+Invalid, 10001 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 104 mSDtfsCounter, 9903 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 747 SyntacticMatches, 3 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1853 ImplicationChecksByTransitivity, 17.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=682occurred in iteration=16, InterpolantAutomatonStates: 191, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 18.8s InterpolantComputationTime, 578 NumberOfCodeBlocks, 512 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 916 ConstructedInterpolants, 107 QuantifiedInterpolants, 16032 SizeOfPredicates, 90 NumberOfNonLiveVariables, 1778 ConjunctsInSsa, 185 ConjunctsInUnsatCore, 28 InterpolantComputations, 6 PerfectInterpolantSequences, 396/1244 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2024-12-02 15:51:35,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ac5d7a-1612-4b73-a250-7fee1642c220/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
UNKNOWN: Overapproximated counterexample