./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_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:02:19,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:02:19,264 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 01:02:19,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:02:19,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:02:19,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:02:19,299 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:02:19,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:02:19,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:02:19,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:02:19,302 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:02:19,302 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:02:19,303 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:02:19,304 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:02:19,304 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:02:19,305 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:02:19,306 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:02:19,306 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:02:19,307 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:02:19,308 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:02:19,308 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:02:19,309 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:02:19,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 01:02:19,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 01:02:19,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:02:19,312 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:02:19,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:02:19,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:02:19,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:02:19,314 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 01:02:19,314 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 01:02:19,315 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 01:02:19,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:02:19,316 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 01:02:19,316 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:02:19,317 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:02:19,317 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:02:19,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:02:19,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:02:19,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:02:19,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:02:19,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:02:19,320 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:02:19,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:02:19,321 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:02:19,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:02:19,321 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2023-11-12 01:02:19,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:02:19,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:02:19,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:02:19,637 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:02:19,639 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:02:19,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2023-11-12 01:02:22,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:02:23,172 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:02:23,173 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2023-11-12 01:02:23,207 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/data/33aa62211/75850ce56a59471a99253186f332ea08/FLAG7b8cb5ef5 [2023-11-12 01:02:23,227 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/data/33aa62211/75850ce56a59471a99253186f332ea08 [2023-11-12 01:02:23,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:02:23,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:02:23,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:02:23,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:02:23,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:02:23,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235fd731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:23, skipping insertion in model container [2023-11-12 01:02:23,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:02:23" (1/1) ... [2023-11-12 01:02:23,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:02:24,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:02:24,275 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:02:24,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:02:24,539 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:24,540 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:24,548 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:02:24,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24 WrapperNode [2023-11-12 01:02:24,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:02:24,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:02:24,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:02:24,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:02:24,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (1/1) ... [2023-11-12 01:02:24,600 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (1/1) ... [2023-11-12 01:02:24,701 INFO L138 Inliner]: procedures = 489, calls = 130, calls flagged for inlining = 48, calls inlined = 122, statements flattened = 1858 [2023-11-12 01:02:24,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:02:24,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:02:24,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:02:24,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:02:24,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (1/1) ... [2023-11-12 01:02:24,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (1/1) ... [2023-11-12 01:02:24,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (1/1) ... [2023-11-12 01:02:24,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (1/1) ... [2023-11-12 01:02:24,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (1/1) ... [2023-11-12 01:02:24,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (1/1) ... [2023-11-12 01:02:24,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (1/1) ... [2023-11-12 01:02:24,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (1/1) ... [2023-11-12 01:02:24,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:02:24,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:02:24,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:02:24,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:02:24,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (1/1) ... [2023-11-12 01:02:24,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:02:24,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:24,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:02:24,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae09524-2e26-494c-9536-876feb6721e6/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:02:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2023-11-12 01:02:24,919 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2023-11-12 01:02:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 01:02:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:02:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 01:02:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 01:02:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 01:02:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:02:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:02:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:02:24,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:02:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:02:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:02:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:02:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:02:24,925 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 01:02:25,252 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:02:25,254 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:02:28,295 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:02:29,222 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:02:29,223 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-12 01:02:29,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:02:29 BoogieIcfgContainer [2023-11-12 01:02:29,229 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:02:29,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:02:29,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:02:29,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:02:29,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:02:23" (1/3) ... [2023-11-12 01:02:29,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d19e6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:02:29, skipping insertion in model container [2023-11-12 01:02:29,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:24" (2/3) ... [2023-11-12 01:02:29,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d19e6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:02:29, skipping insertion in model container [2023-11-12 01:02:29,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:02:29" (3/3) ... [2023-11-12 01:02:29,240 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2023-11-12 01:02:29,264 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:02:29,264 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 520 error locations. [2023-11-12 01:02:29,264 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 01:02:29,594 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 01:02:29,678 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 01:02:29,707 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2282 places, 2354 transitions, 4715 flow [2023-11-12 01:02:29,710 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2282 places, 2354 transitions, 4715 flow [2023-11-12 01:02:29,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2282 places, 2354 transitions, 4715 flow [2023-11-12 01:02:32,175 INFO L124 PetriNetUnfolderBase]: 141/4395 cut-off events. [2023-11-12 01:02:32,176 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 01:02:32,289 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 01:02:32,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 839270