./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/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_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:46:35,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:46:35,700 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-12 00:46:35,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:46:35,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:46:35,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:46:35,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:46:35,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:46:35,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:46:35,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:46:35,760 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:46:35,761 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:46:35,761 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:46:35,763 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:46:35,763 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:46:35,764 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:46:35,764 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:46:35,764 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:46:35,765 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:46:35,765 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:46:35,765 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:46:35,766 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:46:35,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:46:35,768 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:46:35,768 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:46:35,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:46:35,769 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:46:35,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:46:35,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:46:35,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:46:35,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:46:35,771 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 00:46:35,771 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:46:35,772 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:46:35,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:46:35,772 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:46:35,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:46:35,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:46:35,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:46:35,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:46:35,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:46:35,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:46:35,774 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:46:35,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:46:35,774 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:46:35,775 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:46:35,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:46:35,775 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_54b43ef5-5fc9-4879-b81c-05beba68163d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2023-11-12 00:46:36,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:46:36,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:46:36,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:46:36,103 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:46:36,103 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:46:36,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread/queue_ok_longest.i [2023-11-12 00:46:39,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:46:39,656 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:46:39,657 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/sv-benchmarks/c/pthread/queue_ok_longest.i [2023-11-12 00:46:39,684 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX/data/6bfd40c4e/17d6947d5c5c473393439adc319147f0/FLAGf4a09cd5e [2023-11-12 00:46:39,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX/data/6bfd40c4e/17d6947d5c5c473393439adc319147f0 [2023-11-12 00:46:39,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:46:39,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:46:39,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:46:39,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:46:39,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:46:39,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:46:39" (1/1) ... [2023-11-12 00:46:39,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476e3d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:39, skipping insertion in model container [2023-11-12 00:46:39,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:46:39" (1/1) ... [2023-11-12 00:46:39,796 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:46:40,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:46:40,392 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:46:40,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:46:40,529 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:46:40,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40 WrapperNode [2023-11-12 00:46:40,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:46:40,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:46:40,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:46:40,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:46:40,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (1/1) ... [2023-11-12 00:46:40,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (1/1) ... [2023-11-12 00:46:40,661 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 393 [2023-11-12 00:46:40,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:46:40,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:46:40,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:46:40,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:46:40,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (1/1) ... [2023-11-12 00:46:40,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (1/1) ... [2023-11-12 00:46:40,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (1/1) ... [2023-11-12 00:46:40,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (1/1) ... [2023-11-12 00:46:40,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (1/1) ... [2023-11-12 00:46:40,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (1/1) ... [2023-11-12 00:46:40,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (1/1) ... [2023-11-12 00:46:40,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (1/1) ... [2023-11-12 00:46:40,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:46:40,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:46:40,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:46:40,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:46:40,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (1/1) ... [2023-11-12 00:46:40,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:46:40,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:46:40,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:46:40,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b43ef5-5fc9-4879-b81c-05beba68163d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:46:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 00:46:40,859 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 00:46:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 00:46:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 00:46:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:46:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:46:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:46:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:46:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 00:46:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:46:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:46:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:46:40,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:46:40,865 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 00:46:41,055 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:46:41,057 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:46:42,017 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:46:42,040 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:46:42,041 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:46:42,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:46:42 BoogieIcfgContainer [2023-11-12 00:46:42,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:46:42,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:46:42,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:46:42,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:46:42,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:46:39" (1/3) ... [2023-11-12 00:46:42,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d22f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:46:42, skipping insertion in model container [2023-11-12 00:46:42,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:40" (2/3) ... [2023-11-12 00:46:42,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d22f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:46:42, skipping insertion in model container [2023-11-12 00:46:42,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:46:42" (3/3) ... [2023-11-12 00:46:42,060 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2023-11-12 00:46:42,069 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:46:42,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:46:42,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2023-11-12 00:46:42,081 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:46:42,294 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 00:46:42,368 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:46:42,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 446 places, 454 transitions, 922 flow [2023-11-12 00:46:42,388 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 446 places, 454 transitions, 922 flow [2023-11-12 00:46:42,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 446 places, 454 transitions, 922 flow [2023-11-12 00:46:42,658 INFO L124 PetriNetUnfolderBase]: 15/452 cut-off events. [2023-11-12 00:46:42,659 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 00:46:42,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 452 events. 15/452 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 806 event pairs, 0 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 321. Up to 3 conditions per place. [2023-11-12 00:46:42,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 54888 [2023-11-12 00:47:20,510 WARN L293 SmtUtils]: Spent 11.39s on a formula simplification that was a NOOP. DAG size: 118 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-12 00:47:31,337 WARN L293 SmtUtils]: Spent 10.82s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)