./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/twostage_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b 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_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/twostage_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 c1c75e051173a22f60f33f26eab32e0b3a7dcaf46f2d4cc494d0c9d8775c984e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:55:54,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:55:54,964 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:55:54,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:55:54,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:55:55,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:55:55,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:55:55,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:55:55,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:55:55,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:55:55,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:55:55,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:55:55,028 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:55:55,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:55:55,031 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:55:55,031 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:55:55,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:55:55,032 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:55:55,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:55:55,033 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:55:55,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:55:55,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:55:55,035 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:55:55,035 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:55:55,036 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:55:55,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:55:55,037 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:55:55,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:55:55,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:55:55,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:55:55,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:55:55,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:55:55,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:55:55,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:55:55,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:55:55,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:55:55,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:55:55,041 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:55:55,041 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:55:55,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:55:55,042 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:55:55,042 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_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1c75e051173a22f60f33f26eab32e0b3a7dcaf46f2d4cc494d0c9d8775c984e [2023-11-06 22:55:55,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:55:55,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:55:55,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:55:55,312 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:55:55,313 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:55:55,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/twostage_3.i [2023-11-06 22:55:58,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:55:58,972 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:55:58,972 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/sv-benchmarks/c/pthread/twostage_3.i [2023-11-06 22:55:59,002 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/data/bfde68a13/a537a3015bc04f7bbd1256a50c6ef728/FLAG1bca6005e [2023-11-06 22:55:59,020 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/data/bfde68a13/a537a3015bc04f7bbd1256a50c6ef728 [2023-11-06 22:55:59,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:55:59,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:55:59,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:55:59,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:55:59,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:55:59,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193f73e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59, skipping insertion in model container [2023-11-06 22:55:59,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:55:59,898 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 22:55:59,900 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 22:55:59,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:55:59,914 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:56:00,025 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 22:56:00,027 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 22:56:00,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:56:00,133 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:56:00,142 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:56:00,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00 WrapperNode [2023-11-06 22:56:00,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:56:00,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:00,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:56:00,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:56:00,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (1/1) ... [2023-11-06 22:56:00,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (1/1) ... [2023-11-06 22:56:00,273 INFO L138 Inliner]: procedures = 374, calls = 62, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 332 [2023-11-06 22:56:00,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:00,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:56:00,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:56:00,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:56:00,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (1/1) ... [2023-11-06 22:56:00,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (1/1) ... [2023-11-06 22:56:00,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (1/1) ... [2023-11-06 22:56:00,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (1/1) ... [2023-11-06 22:56:00,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (1/1) ... [2023-11-06 22:56:00,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (1/1) ... [2023-11-06 22:56:00,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (1/1) ... [2023-11-06 22:56:00,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (1/1) ... [2023-11-06 22:56:00,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:56:00,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:56:00,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:56:00,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:56:00,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (1/1) ... [2023-11-06 22:56:00,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:56:00,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:00,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:56:00,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75423ae9-800b-4406-92c2-5c8294591d96/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:56:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2023-11-06 22:56:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2023-11-06 22:56:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2023-11-06 22:56:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2023-11-06 22:56:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-06 22:56:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:56:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:56:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:56:00,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:56:00,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:56:00,488 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:56:00,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:56:00,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:56:00,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:56:00,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:56:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:56:00,491 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:56:00,660 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:56:00,663 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:56:01,533 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:56:01,555 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:56:01,555 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:56:01,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:01 BoogieIcfgContainer [2023-11-06 22:56:01,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:56:01,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:56:01,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:56:01,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:56:01,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:55:59" (1/3) ... [2023-11-06 22:56:01,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e044792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:01, skipping insertion in model container [2023-11-06 22:56:01,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:00" (2/3) ... [2023-11-06 22:56:01,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e044792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:01, skipping insertion in model container [2023-11-06 22:56:01,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:01" (3/3) ... [2023-11-06 22:56:01,573 INFO L112 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2023-11-06 22:56:01,582 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:56:01,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:56:01,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2023-11-06 22:56:01,595 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:56:01,729 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:56:01,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 406 transitions, 832 flow [2023-11-06 22:56:02,185 INFO L124 PetriNetUnfolderBase]: 43/747 cut-off events. [2023-11-06 22:56:02,186 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:56:02,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 747 events. 43/747 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3095 event pairs, 0 based on Foata normal form. 0/633 useless extension candidates. Maximal degree in co-relation 423. Up to 8 conditions per place. [2023-11-06 22:56:02,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 390 places, 406 transitions, 832 flow [2023-11-06 22:56:02,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 390 places, 406 transitions, 832 flow [2023-11-06 22:56:02,230 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:56:02,256 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 390 places, 406 transitions, 832 flow [2023-11-06 22:56:02,260 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 390 places, 406 transitions, 832 flow [2023-11-06 22:56:02,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 406 transitions, 832 flow [2023-11-06 22:56:02,459 INFO L124 PetriNetUnfolderBase]: 43/747 cut-off events. [2023-11-06 22:56:02,459 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:56:02,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 747 events. 43/747 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3095 event pairs, 0 based on Foata normal form. 0/633 useless extension candidates. Maximal degree in co-relation 423. Up to 8 conditions per place. [2023-11-06 22:56:02,491 INFO L119 LiptonReduction]: Number of co-enabled transitions 23340 [2023-11-06 22:56:43,511 WARN L293 SmtUtils]: Spent 11.51s on a formula simplification that was a NOOP. DAG size: 134 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:56:54,341 WARN L293 SmtUtils]: Spent 10.83s on a formula simplification that was a NOOP. DAG size: 133 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:57:05,381 WARN L293 SmtUtils]: Spent 11.04s on a formula simplification that was a NOOP. DAG size: 134 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:57:15,576 WARN L293 SmtUtils]: Spent 10.19s on a formula simplification that was a NOOP. DAG size: 133 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:57:35,069 WARN L293 SmtUtils]: Spent 18.43s on a formula simplification that was a NOOP. DAG size: 239 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:57:54,004 WARN L293 SmtUtils]: Spent 18.93s on a formula simplification that was a NOOP. DAG size: 239 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:58:15,931 WARN L293 SmtUtils]: Spent 21.92s on a formula simplification that was a NOOP. DAG size: 239 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:58:39,904 WARN L293 SmtUtils]: Spent 23.97s on a formula simplification that was a NOOP. DAG size: 239 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:58:56,038 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 165 DAG size of output: 162 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)