./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version a0165632
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 17:35:58,767 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 17:35:58,864 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 17:35:58,872 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 17:35:58,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 17:35:58,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 17:35:58,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 17:35:58,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 17:35:58,911 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 17:35:58,911 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 17:35:58,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 17:35:58,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 17:35:58,912 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 17:35:58,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 17:35:58,913 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 17:35:58,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 17:35:58,917 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 17:35:58,918 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 17:35:58,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 17:35:58,918 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 17:35:58,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 17:35:58,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 17:35:58,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 17:35:58,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 17:35:58,920 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 17:35:58,921 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 17:35:58,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 17:35:58,921 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 17:35:58,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 17:35:58,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 17:35:58,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 17:35:58,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 17:35:58,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 17:35:58,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 17:35:58,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 17:35:58,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 17:35:58,924 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 17:35:58,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 17:35:58,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 17:35:58,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 17:35:58,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 17:35:58,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 17:35:58,926 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f
[2024-11-08 17:35:59,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 17:35:59,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 17:35:59,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 17:35:59,290 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 17:35:59,290 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 17:35:59,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i
Unable to find full path for "g++"
[2024-11-08 17:36:01,205 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 17:36:01,591 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 17:36:01,591 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i
[2024-11-08 17:36:01,631 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/data/88d16f8bc/8262db835ef249c2b9d103915404addd/FLAG30813fd8b
[2024-11-08 17:36:01,658 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/data/88d16f8bc/8262db835ef249c2b9d103915404addd
[2024-11-08 17:36:01,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 17:36:01,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 17:36:01,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 17:36:01,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 17:36:01,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 17:36:01,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:36:01" (1/1) ...
[2024-11-08 17:36:01,686 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b7286f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:01, skipping insertion in model container
[2024-11-08 17:36:01,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:36:01" (1/1) ...
[2024-11-08 17:36:01,754 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 17:36:02,578 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482]
[2024-11-08 17:36:02,631 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055]
[2024-11-08 17:36:02,649 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464]
[2024-11-08 17:36:02,677 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 17:36:02,698 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 17:36:02,783 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482]
[2024-11-08 17:36:02,814 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055]
[2024-11-08 17:36:02,818 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464]
[2024-11-08 17:36:02,836 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 17:36:02,983 INFO L204 MainTranslator]: Completed translation
[2024-11-08 17:36:02,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02 WrapperNode
[2024-11-08 17:36:02,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 17:36:02,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 17:36:02,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 17:36:02,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 17:36:02,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,122 INFO L138 Inliner]: procedures = 491, calls = 156, calls flagged for inlining = 45, calls inlined = 117, statements flattened = 1869
[2024-11-08 17:36:03,123 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 17:36:03,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 17:36:03,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 17:36:03,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 17:36:03,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,209 INFO L175 MemorySlicer]: Split 311 memory accesses to 9 slices as follows [2, 12, 195, 4, 8, 6, 2, 80, 2]. 63 percent of accesses are in the largest equivalence class. The 54 initializations are split as follows [2, 4, 26, 0, 2, 0, 0, 20, 0]. The 95 writes are split as follows [0, 4, 61, 2, 2, 4, 1, 20, 1].
[2024-11-08 17:36:03,209 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 17:36:03,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 17:36:03,348 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 17:36:03,348 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 17:36:03,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (1/1) ...
[2024-11-08 17:36:03,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 17:36:03,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:36:03,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 17:36:03,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 17:36:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer
[2024-11-08 17:36:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer
[2024-11-08 17:36:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2024-11-08 17:36:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-08 17:36:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2024-11-08 17:36:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-08 17:36:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-08 17:36:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-11-08 17:36:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3
[2024-11-08 17:36:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4
[2024-11-08 17:36:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5
[2024-11-08 17:36:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6
[2024-11-08 17:36:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7
[2024-11-08 17:36:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8
[2024-11-08 17:36:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2024-11-08 17:36:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 17:36:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2024-11-08 17:36:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2024-11-08 17:36:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2
[2024-11-08 17:36:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3
[2024-11-08 17:36:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4
[2024-11-08 17:36:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5
[2024-11-08 17:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6
[2024-11-08 17:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7
[2024-11-08 17:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8
[2024-11-08 17:36:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 17:36:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 17:36:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-08 17:36:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2024-11-08 17:36:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2024-11-08 17:36:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2
[2024-11-08 17:36:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3
[2024-11-08 17:36:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4
[2024-11-08 17:36:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5
[2024-11-08 17:36:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6
[2024-11-08 17:36:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7
[2024-11-08 17:36:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8
[2024-11-08 17:36:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0
[2024-11-08 17:36:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1
[2024-11-08 17:36:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2
[2024-11-08 17:36:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3
[2024-11-08 17:36:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4
[2024-11-08 17:36:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5
[2024-11-08 17:36:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6
[2024-11-08 17:36:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7
[2024-11-08 17:36:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8
[2024-11-08 17:36:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock
[2024-11-08 17:36:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-08 17:36:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-08 17:36:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-11-08 17:36:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3
[2024-11-08 17:36:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4
[2024-11-08 17:36:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5
[2024-11-08 17:36:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6
[2024-11-08 17:36:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7
[2024-11-08 17:36:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8
[2024-11-08 17:36:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 17:36:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-08 17:36:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-08 17:36:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3
[2024-11-08 17:36:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4
[2024-11-08 17:36:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5
[2024-11-08 17:36:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6
[2024-11-08 17:36:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7
[2024-11-08 17:36:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8
[2024-11-08 17:36:03,435 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-08 17:36:03,807 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 17:36:03,809 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 17:36:06,342 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-08 17:36:06,343 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 17:36:08,009 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 17:36:08,009 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-08 17:36:08,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:36:08 BoogieIcfgContainer
[2024-11-08 17:36:08,010 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 17:36:08,015 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 17:36:08,015 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 17:36:08,019 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 17:36:08,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:36:01" (1/3) ...
[2024-11-08 17:36:08,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3126b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:36:08, skipping insertion in model container
[2024-11-08 17:36:08,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:36:02" (2/3) ...
[2024-11-08 17:36:08,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3126b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:36:08, skipping insertion in model container
[2024-11-08 17:36:08,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:36:08" (3/3) ...
[2024-11-08 17:36:08,024 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i
[2024-11-08 17:36:08,047 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 17:36:08,047 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations.
[2024-11-08 17:36:08,047 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-08 17:36:08,194 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions.
[2024-11-08 17:36:08,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 315 transitions, 637 flow
[2024-11-08 17:36:08,603 INFO L124 PetriNetUnfolderBase]: 118/589 cut-off events.
[2024-11-08 17:36:08,603 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2024-11-08 17:36:08,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 589 events. 118/589 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2750 event pairs, 0 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 301. Up to 6 conditions per place.
[2024-11-08 17:36:08,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 315 transitions, 637 flow
[2024-11-08 17:36:08,625 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 315 transitions, 637 flow
[2024-11-08 17:36:08,641 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 17:36:08,648 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@560e6470, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 17:36:08,648 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2024-11-08 17:36:08,665 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-08 17:36:08,665 INFO L124 PetriNetUnfolderBase]: 9/49 cut-off events.
[2024-11-08 17:36:08,665 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-08 17:36:08,666 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 17:36:08,666 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:36:08,667 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2024-11-08 17:36:08,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:36:08,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1284882040, now seen corresponding path program 1 times
[2024-11-08 17:36:08,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:36:08,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963105355]
[2024-11-08 17:36:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:36:08,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:36:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:36:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-08 17:36:09,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:36:09,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963105355]
[2024-11-08 17:36:09,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963105355] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:36:09,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:36:09,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 17:36:09,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430437341]
[2024-11-08 17:36:09,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:36:09,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 17:36:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:36:09,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 17:36:09,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 17:36:09,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 315
[2024-11-08 17:36:09,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 315 transitions, 637 flow. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 17:36:09,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 17:36:09,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 315
[2024-11-08 17:36:09,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 17:36:14,344 INFO L124 PetriNetUnfolderBase]: 8479/15976 cut-off events.
[2024-11-08 17:36:14,345 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2024-11-08 17:36:14,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30243 conditions, 15976 events. 8479/15976 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 102743 event pairs, 2754 based on Foata normal form. 203/15131 useless extension candidates. Maximal degree in co-relation 30153. Up to 7230 conditions per place.
[2024-11-08 17:36:14,425 INFO L140 encePairwiseOnDemand]: 286/315 looper letters, 463 selfloop transitions, 12 changer transitions 4/536 dead transitions.
[2024-11-08 17:36:14,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 536 transitions, 2037 flow
[2024-11-08 17:36:14,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 17:36:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-08 17:36:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions.
[2024-11-08 17:36:14,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111
[2024-11-08 17:36:14,443 INFO L175 Difference]: Start difference. First operand has 255 places, 315 transitions, 637 flow. Second operand 3 states and 672 transitions.
[2024-11-08 17:36:14,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 536 transitions, 2037 flow
[2024-11-08 17:36:14,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 536 transitions, 2037 flow, removed 0 selfloop flow, removed 0 redundant places.
[2024-11-08 17:36:14,461 INFO L231 Difference]: Finished difference. Result has 258 places, 311 transitions, 693 flow
[2024-11-08 17:36:14,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=693, PETRI_PLACES=258, PETRI_TRANSITIONS=311}
[2024-11-08 17:36:14,467 INFO L277 CegarLoopForPetriNet]: 255 programPoint places, 3 predicate places.
[2024-11-08 17:36:14,467 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 311 transitions, 693 flow
[2024-11-08 17:36:14,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 17:36:14,468 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 17:36:14,468 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:36:14,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 17:36:14,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2024-11-08 17:36:14,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:36:14,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1999169342, now seen corresponding path program 1 times
[2024-11-08 17:36:14,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:36:14,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772237254]
[2024-11-08 17:36:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:36:14,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:36:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:36:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-08 17:36:14,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:36:14,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772237254]
[2024-11-08 17:36:14,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772237254] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:36:14,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255939808]
[2024-11-08 17:36:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:36:14,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:36:14,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:36:14,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:36:14,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 17:36:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:36:14,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:36:14,966 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:36:15,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-08 17:36:15,013 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:36:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-08 17:36:15,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255939808] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:36:15,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 17:36:15,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2024-11-08 17:36:15,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624030305]
[2024-11-08 17:36:15,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:36:15,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 17:36:15,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:36:15,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 17:36:15,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:36:15,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 315
[2024-11-08 17:36:15,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 311 transitions, 693 flow. Second operand has 7 states, 7 states have (on average 53.857142857142854) internal successors, (377), 7 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 17:36:15,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 17:36:15,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 315
[2024-11-08 17:36:15,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 17:36:15,322 INFO L124 PetriNetUnfolderBase]: 69/172 cut-off events.
[2024-11-08 17:36:15,322 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES.
[2024-11-08 17:36:15,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 172 events. 69/172 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 411 event pairs, 32 based on Foata normal form. 39/206 useless extension candidates. Maximal degree in co-relation 323. Up to 119 conditions per place.
[2024-11-08 17:36:15,324 INFO L140 encePairwiseOnDemand]: 306/315 looper letters, 56 selfloop transitions, 8 changer transitions 0/70 dead transitions.
[2024-11-08 17:36:15,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 70 transitions, 292 flow
[2024-11-08 17:36:15,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:36:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-08 17:36:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 378 transitions.
[2024-11-08 17:36:15,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2
[2024-11-08 17:36:15,328 INFO L175 Difference]: Start difference. First operand has 258 places, 311 transitions, 693 flow. Second operand 6 states and 378 transitions.
[2024-11-08 17:36:15,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 70 transitions, 292 flow
[2024-11-08 17:36:15,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 70 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-08 17:36:15,330 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 144 flow
[2024-11-08 17:36:15,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=44}
[2024-11-08 17:36:15,331 INFO L277 CegarLoopForPetriNet]: 255 programPoint places, -207 predicate places.
[2024-11-08 17:36:15,331 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 144 flow
[2024-11-08 17:36:15,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.857142857142854) internal successors, (377), 7 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 17:36:15,332 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 17:36:15,332 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:36:15,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 17:36:15,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b8f341-0f0d-44ff-823d-3515246e897d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:36:15,534 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2024-11-08 17:36:15,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:36:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash 991868784, now seen corresponding path program 2 times
[2024-11-08 17:36:15,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:36:15,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544419966]
[2024-11-08 17:36:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:36:15,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:36:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 17:36:15,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-08 17:36:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 17:36:15,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-08 17:36:15,712 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-08 17:36:15,713 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining)
[2024-11-08 17:36:15,715 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining)
[2024-11-08 17:36:15,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining)
[2024-11-08 17:36:15,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining)
[2024-11-08 17:36:15,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining)
[2024-11-08 17:36:15,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining)
[2024-11-08 17:36:15,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-08 17:36:15,717 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1]
[2024-11-08 17:36:15,720 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-11-08 17:36:15,720 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2024-11-08 17:36:15,848 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-11-08 17:36:15,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 343 transitions, 702 flow
[2024-11-08 17:36:16,074 INFO L124 PetriNetUnfolderBase]: 184/911 cut-off events.
[2024-11-08 17:36:16,074 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES.
[2024-11-08 17:36:16,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 911 events. 184/911 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5125 event pairs, 0 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 591. Up to 9 conditions per place.
[2024-11-08 17:36:16,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 343 transitions, 702 flow
[2024-11-08 17:36:16,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 343 transitions, 702 flow
[2024-11-08 17:36:16,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 17:36:16,087 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@560e6470, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 17:36:16,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2024-11-08 17:36:16,108 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-08 17:36:16,109 INFO L124 PetriNetUnfolderBase]: 19/110 cut-off events.
[2024-11-08 17:36:16,109 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-08 17:36:16,109 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 17:36:16,109 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:36:16,109 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] ===
[2024-11-08 17:36:16,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:36:16,110 INFO L85 PathProgramCache]: Analyzing trace with hash 390079106, now seen corresponding path program 1 times
[2024-11-08 17:36:16,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:36:16,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233981345]
[2024-11-08 17:36:16,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:36:16,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:36:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:36:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-11-08 17:36:16,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:36:16,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233981345]
[2024-11-08 17:36:16,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233981345] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:36:16,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:36:16,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 17:36:16,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238413873]
[2024-11-08 17:36:16,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:36:16,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 17:36:16,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:36:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 17:36:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 17:36:16,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 343
[2024-11-08 17:36:16,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 343 transitions, 702 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 17:36:16,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 17:36:16,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 343
[2024-11-08 17:36:16,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand