./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl --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 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:27:00,264 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:27:00,336 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:27:00,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:27:00,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:27:00,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:27:00,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:27:00,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:27:00,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:27:00,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:27:00,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:27:00,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:27:00,385 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:27:00,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:27:00,387 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:27:00,388 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:27:00,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:27:00,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:27:00,389 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:27:00,390 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:27:00,390 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:27:00,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:27:00,391 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:27:00,391 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:27:00,392 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:27:00,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:27:00,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:27:00,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:27:00,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:27:00,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:00,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:27:00,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:27:00,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:27:00,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:27:00,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:27:00,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:27:00,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:27:00,397 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:27:00,397 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_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2023-11-12 02:27:00,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:27:00,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:27:00,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:27:00,736 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:27:00,737 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:27:00,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2023-11-12 02:27:04,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:27:04,493 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:27:04,494 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2023-11-12 02:27:04,535 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/data/7840ee3de/9d3f096a2658469ea988695c2b057893/FLAG245d4e7ef [2023-11-12 02:27:04,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/data/7840ee3de/9d3f096a2658469ea988695c2b057893 [2023-11-12 02:27:04,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:27:04,571 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:27:04,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:04,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:27:04,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:27:04,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:04" (1/1) ... [2023-11-12 02:27:04,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53614b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:04, skipping insertion in model container [2023-11-12 02:27:04,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:04" (1/1) ... [2023-11-12 02:27:04,692 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:27:05,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:05,774 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:27:05,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:06,100 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:27:06,100 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:27:06,110 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:27:06,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06 WrapperNode [2023-11-12 02:27:06,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:06,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:06,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:27:06,113 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:27:06,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (1/1) ... [2023-11-12 02:27:06,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (1/1) ... [2023-11-12 02:27:06,300 INFO L138 Inliner]: procedures = 489, calls = 130, calls flagged for inlining = 48, calls inlined = 122, statements flattened = 1858 [2023-11-12 02:27:06,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:06,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:27:06,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:27:06,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:27:06,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (1/1) ... [2023-11-12 02:27:06,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (1/1) ... [2023-11-12 02:27:06,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (1/1) ... [2023-11-12 02:27:06,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (1/1) ... [2023-11-12 02:27:06,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (1/1) ... [2023-11-12 02:27:06,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (1/1) ... [2023-11-12 02:27:06,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (1/1) ... [2023-11-12 02:27:06,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (1/1) ... [2023-11-12 02:27:06,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:27:06,528 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:27:06,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:27:06,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:27:06,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (1/1) ... [2023-11-12 02:27:06,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:06,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:06,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:27:06,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52067043-8e14-4f06-8c5b-95d784ddbeee/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:27:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2023-11-12 02:27:06,636 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2023-11-12 02:27:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:27:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:27:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:27:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:27:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:27:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:27:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:27:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:27:06,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:27:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:27:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:27:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:27:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:27:06,646 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:27:07,016 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:27:07,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:27:10,367 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:27:11,413 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:27:11,414 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-12 02:27:11,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:11 BoogieIcfgContainer [2023-11-12 02:27:11,420 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:27:11,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:27:11,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:27:11,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:27:11,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:27:04" (1/3) ... [2023-11-12 02:27:11,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3e3deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:11, skipping insertion in model container [2023-11-12 02:27:11,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:06" (2/3) ... [2023-11-12 02:27:11,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3e3deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:11, skipping insertion in model container [2023-11-12 02:27:11,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:11" (3/3) ... [2023-11-12 02:27:11,434 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2023-11-12 02:27:11,458 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:27:11,459 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 520 error locations. [2023-11-12 02:27:11,459 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:27:11,851 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:27:11,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2282 places, 2354 transitions, 4715 flow [2023-11-12 02:27:14,258 INFO L124 PetriNetUnfolderBase]: 141/4395 cut-off events. [2023-11-12 02:27:14,259 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:27:14,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4400 conditions, 4395 events. 141/4395 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 24482 event pairs, 0 based on Foata normal form. 0/3271 useless extension candidates. Maximal degree in co-relation 2251. Up to 6 conditions per place. [2023-11-12 02:27:14,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 2282 places, 2354 transitions, 4715 flow [2023-11-12 02:27:14,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2282 places, 2354 transitions, 4715 flow [2023-11-12 02:27:14,472 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:27:14,487 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2282 places, 2354 transitions, 4715 flow [2023-11-12 02:27:14,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2282 places, 2354 transitions, 4715 flow [2023-11-12 02:27:14,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2282 places, 2354 transitions, 4715 flow [2023-11-12 02:27:16,351 INFO L124 PetriNetUnfolderBase]: 141/4395 cut-off events. [2023-11-12 02:27:16,352 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:27:16,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4400 conditions, 4395 events. 141/4395 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 24482 event pairs, 0 based on Foata normal form. 0/3271 useless extension candidates. Maximal degree in co-relation 2251. Up to 6 conditions per place. [2023-11-12 02:27:16,945 INFO L119 LiptonReduction]: Number of co-enabled transitions 839270