./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:02:47,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:02:47,531 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:02:47,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:02:47,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:02:47,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:02:47,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:02:47,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:02:47,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:02:47,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:02:47,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:02:47,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:02:47,583 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:02:47,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:02:47,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:02:47,586 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:02:47,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:02:47,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:02:47,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:02:47,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:02:47,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:02:47,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:02:47,598 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:02:47,599 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:02:47,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:02:47,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:02:47,601 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:02:47,603 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:02:47,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:02:47,604 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:02:47,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:47,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:02:47,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:02:47,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:02:47,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:02:47,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:02:47,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:02:47,608 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:02:47,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:02:47,609 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:02:47,609 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:02:47,610 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_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 [2023-11-19 08:02:47,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:02:47,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:02:47,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:02:47,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:02:48,000 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:02:48,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2023-11-19 08:02:51,260 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:02:51,616 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:02:51,616 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2023-11-19 08:02:51,638 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/data/224860aca/5b9180c7026c4c1fb89639aee841d911/FLAG64000cf24 [2023-11-19 08:02:51,653 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/data/224860aca/5b9180c7026c4c1fb89639aee841d911 [2023-11-19 08:02:51,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:02:51,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:02:51,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:51,660 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:02:51,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:02:51,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:51" (1/1) ... [2023-11-19 08:02:51,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35525540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:51, skipping insertion in model container [2023-11-19 08:02:51,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:51" (1/1) ... [2023-11-19 08:02:51,755 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:02:52,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:52,620 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:02:52,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:52,907 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:02:52,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52 WrapperNode [2023-11-19 08:02:52,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:52,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:52,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:02:52,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:02:52,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (1/1) ... [2023-11-19 08:02:52,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (1/1) ... [2023-11-19 08:02:53,032 INFO L138 Inliner]: procedures = 368, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 195 [2023-11-19 08:02:53,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:53,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:02:53,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:02:53,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:02:53,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (1/1) ... [2023-11-19 08:02:53,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (1/1) ... [2023-11-19 08:02:53,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (1/1) ... [2023-11-19 08:02:53,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (1/1) ... [2023-11-19 08:02:53,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (1/1) ... [2023-11-19 08:02:53,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (1/1) ... [2023-11-19 08:02:53,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (1/1) ... [2023-11-19 08:02:53,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (1/1) ... [2023-11-19 08:02:53,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:02:53,151 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:02:53,151 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:02:53,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:02:53,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (1/1) ... [2023-11-19 08:02:53,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:53,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:53,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:02:53,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7ac78e-6695-4884-a703-52c8439879a5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:02:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:02:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:02:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:02:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:02:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:02:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:02:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:02:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:02:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:02:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 08:02:53,254 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 08:02:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:02:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:02:53,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:02:53,258 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:02:53,520 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:02:53,523 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:54,203 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:54,227 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:54,228 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:02:54,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:54 BoogieIcfgContainer [2023-11-19 08:02:54,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:54,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:54,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:54,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:54,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:02:51" (1/3) ... [2023-11-19 08:02:54,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5cd77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:54, skipping insertion in model container [2023-11-19 08:02:54,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:52" (2/3) ... [2023-11-19 08:02:54,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5cd77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:54, skipping insertion in model container [2023-11-19 08:02:54,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:54" (3/3) ... [2023-11-19 08:02:54,250 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2023-11-19 08:02:54,260 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:02:54,272 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:54,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 08:02:54,273 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:02:54,381 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:02:54,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 299 transitions, 602 flow [2023-11-19 08:02:54,661 INFO L124 PetriNetUnfolderBase]: 0/298 cut-off events. [2023-11-19 08:02:54,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:02:54,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 298 events. 0/298 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 157 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-19 08:02:54,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 299 transitions, 602 flow [2023-11-19 08:02:54,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 298 transitions, 599 flow [2023-11-19 08:02:54,680 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:02:54,692 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 298 transitions, 599 flow [2023-11-19 08:02:54,695 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 298 transitions, 599 flow [2023-11-19 08:02:54,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 298 transitions, 599 flow [2023-11-19 08:02:54,792 INFO L124 PetriNetUnfolderBase]: 0/298 cut-off events. [2023-11-19 08:02:54,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:02:54,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 298 events. 0/298 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 157 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-19 08:02:54,801 INFO L119 LiptonReduction]: Number of co-enabled transitions 7728 [2023-11-19 08:03:36,609 WARN L293 SmtUtils]: Spent 9.88s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-19 08:03:43,983 WARN L293 SmtUtils]: Spent 7.37s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-19 08:03:53,939 WARN L293 SmtUtils]: Spent 9.95s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)