./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 9bd2c7ff 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_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/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_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/twostage_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/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_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/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 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:08,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:08,990 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:04:08,996 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:08,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:09,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:09,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:09,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:09,035 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:09,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:09,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:09,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:09,038 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:09,039 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:09,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:04:09,040 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:04:09,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:09,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:04:09,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:09,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:04:09,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:09,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:04:09,045 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:04:09,046 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:04:09,046 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:04:09,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:04:09,047 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:09,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:09,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:09,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:09,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:09,051 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:09,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:09,052 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:04:09,052 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:09,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:04:09,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:09,054 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:04:09,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:09,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:09,056 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:09,056 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_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 [2023-11-19 08:04:09,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:09,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:09,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:09,448 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:09,449 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:09,450 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/twostage_3.i [2023-11-19 08:04:12,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:13,265 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:13,266 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/sv-benchmarks/c/pthread/twostage_3.i [2023-11-19 08:04:13,308 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/bin/uautomizer-verify-uCwYo4JHxu/data/21b52c00f/001df641663541c8b0e10a55eb809816/FLAGe85140f09 [2023-11-19 08:04:13,335 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/bin/uautomizer-verify-uCwYo4JHxu/data/21b52c00f/001df641663541c8b0e10a55eb809816 [2023-11-19 08:04:13,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:13,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:13,351 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:13,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:13,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:13,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:13" (1/1) ... [2023-11-19 08:04:13,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc04ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:13, skipping insertion in model container [2023-11-19 08:04:13,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:13" (1/1) ... [2023-11-19 08:04:13,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:14,275 WARN L1588 CHandler]: Possible shadowing of function lock [2023-11-19 08:04:14,288 WARN L1588 CHandler]: Possible shadowing of function lock [2023-11-19 08:04:14,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:14,308 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:14,441 WARN L1588 CHandler]: Possible shadowing of function lock [2023-11-19 08:04:14,443 WARN L1588 CHandler]: Possible shadowing of function lock [2023-11-19 08:04:14,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:14,576 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:14,586 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:14,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14 WrapperNode [2023-11-19 08:04:14,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:14,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:14,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:14,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:14,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (1/1) ... [2023-11-19 08:04:14,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (1/1) ... [2023-11-19 08:04:14,714 INFO L138 Inliner]: procedures = 374, calls = 63, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 332 [2023-11-19 08:04:14,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:14,716 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:14,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:14,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:14,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (1/1) ... [2023-11-19 08:04:14,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (1/1) ... [2023-11-19 08:04:14,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (1/1) ... [2023-11-19 08:04:14,736 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (1/1) ... [2023-11-19 08:04:14,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (1/1) ... [2023-11-19 08:04:14,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (1/1) ... [2023-11-19 08:04:14,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (1/1) ... [2023-11-19 08:04:14,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (1/1) ... [2023-11-19 08:04:14,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:14,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:14,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:14,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:14,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (1/1) ... [2023-11-19 08:04:14,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:14,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:14,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:14,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca726a1-8c75-4c69-8ef8-25c2adf194a0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2023-11-19 08:04:14,898 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2023-11-19 08:04:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2023-11-19 08:04:14,899 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2023-11-19 08:04:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-19 08:04:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:04:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:04:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:04:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:04:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:04:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:04:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:04:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:04:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:14,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:14,918 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 08:04:15,198 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:15,200 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:16,008 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:16,025 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:16,026 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 08:04:16,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:16 BoogieIcfgContainer [2023-11-19 08:04:16,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:16,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:16,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:16,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:16,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:13" (1/3) ... [2023-11-19 08:04:16,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a172cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:16, skipping insertion in model container [2023-11-19 08:04:16,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:14" (2/3) ... [2023-11-19 08:04:16,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a172cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:16, skipping insertion in model container [2023-11-19 08:04:16,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:16" (3/3) ... [2023-11-19 08:04:16,047 INFO L112 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2023-11-19 08:04:16,058 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:04:16,072 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:16,073 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-11-19 08:04:16,073 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:04:16,190 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 08:04:16,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 414 transitions, 848 flow [2023-11-19 08:04:16,671 INFO L124 PetriNetUnfolderBase]: 43/755 cut-off events. [2023-11-19 08:04:16,672 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:04:16,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 755 events. 43/755 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3168 event pairs, 0 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 423. Up to 8 conditions per place. [2023-11-19 08:04:16,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 398 places, 414 transitions, 848 flow [2023-11-19 08:04:16,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 414 transitions, 848 flow [2023-11-19 08:04:16,720 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:04:16,749 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 398 places, 414 transitions, 848 flow [2023-11-19 08:04:16,752 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 398 places, 414 transitions, 848 flow [2023-11-19 08:04:16,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 414 transitions, 848 flow [2023-11-19 08:04:16,930 INFO L124 PetriNetUnfolderBase]: 43/755 cut-off events. [2023-11-19 08:04:16,930 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:04:16,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 755 events. 43/755 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3168 event pairs, 0 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 423. Up to 8 conditions per place. [2023-11-19 08:04:16,965 INFO L119 LiptonReduction]: Number of co-enabled transitions 26524 [2023-11-19 08:05:01,621 WARN L293 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 166 DAG size of output: 163 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)