./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue.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_f83c6f95-167d-4e62-bd92-103683f77240/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/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_f83c6f95-167d-4e62-bd92-103683f77240/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/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_f83c6f95-167d-4e62-bd92-103683f77240/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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:51:03,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:51:03,849 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:51:03,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:51:03,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:51:03,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:51:03,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:51:03,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:51:03,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:51:03,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:51:03,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:51:03,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:51:03,887 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:51:03,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:51:03,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:51:03,890 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:51:03,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:51:03,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:51:03,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:51:03,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:51:03,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:51:03,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:51:03,893 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:51:03,893 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:51:03,893 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:51:03,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:51:03,894 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:51:03,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:51:03,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:51:03,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:51:03,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:51:03,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:51:03,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:51:03,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:51:03,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:51:03,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:51:03,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:51:03,897 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:51:03,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:51:03,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:51:03,898 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:51:03,900 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_f83c6f95-167d-4e62-bd92-103683f77240/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2023-11-19 07:51:04,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:51:04,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:51:04,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:51:04,201 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:51:04,202 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:51:04,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/queue.i [2023-11-19 07:51:07,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:51:07,632 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:51:07,632 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/sv-benchmarks/c/pthread/queue.i [2023-11-19 07:51:07,651 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/bin/uautomizer-verify-uCwYo4JHxu/data/9848ec7c6/0ce020c47d044d5aa7a2eb5532947046/FLAGa1bbf21d6 [2023-11-19 07:51:07,673 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/bin/uautomizer-verify-uCwYo4JHxu/data/9848ec7c6/0ce020c47d044d5aa7a2eb5532947046 [2023-11-19 07:51:07,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:51:07,680 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:51:07,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:51:07,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:51:07,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:51:07,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:07" (1/1) ... [2023-11-19 07:51:07,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ceaed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:07, skipping insertion in model container [2023-11-19 07:51:07,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:07" (1/1) ... [2023-11-19 07:51:07,753 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:51:08,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:51:08,371 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:51:08,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:51:08,535 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:51:08,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08 WrapperNode [2023-11-19 07:51:08,536 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:51:08,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:51:08,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:51:08,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:51:08,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (1/1) ... [2023-11-19 07:51:08,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (1/1) ... [2023-11-19 07:51:08,634 INFO L138 Inliner]: procedures = 274, calls = 71, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 500 [2023-11-19 07:51:08,635 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:51:08,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:51:08,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:51:08,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:51:08,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (1/1) ... [2023-11-19 07:51:08,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (1/1) ... [2023-11-19 07:51:08,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (1/1) ... [2023-11-19 07:51:08,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (1/1) ... [2023-11-19 07:51:08,718 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (1/1) ... [2023-11-19 07:51:08,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (1/1) ... [2023-11-19 07:51:08,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (1/1) ... [2023-11-19 07:51:08,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (1/1) ... [2023-11-19 07:51:08,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:51:08,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:51:08,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:51:08,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:51:08,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (1/1) ... [2023-11-19 07:51:08,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:51:08,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:08,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:51:08,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83c6f95-167d-4e62-bd92-103683f77240/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:51:08,882 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 07:51:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 07:51:08,882 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 07:51:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 07:51:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:51:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:51:08,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:51:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:51:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:51:08,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:51:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:51:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:51:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:51:08,887 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 07:51:09,133 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:51:09,135 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:51:10,103 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:51:10,126 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:51:10,126 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:51:10,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:10 BoogieIcfgContainer [2023-11-19 07:51:10,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:51:10,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:51:10,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:51:10,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:51:10,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:51:07" (1/3) ... [2023-11-19 07:51:10,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a942a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:10, skipping insertion in model container [2023-11-19 07:51:10,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:08" (2/3) ... [2023-11-19 07:51:10,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a942a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:10, skipping insertion in model container [2023-11-19 07:51:10,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:10" (3/3) ... [2023-11-19 07:51:10,149 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-11-19 07:51:10,158 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:51:10,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:51:10,169 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-19 07:51:10,169 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:51:10,410 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:51:10,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 563 places, 574 transitions, 1162 flow [2023-11-19 07:51:10,863 INFO L124 PetriNetUnfolderBase]: 18/572 cut-off events. [2023-11-19 07:51:10,863 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:51:10,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 572 events. 18/572 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 841 event pairs, 0 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 433. Up to 2 conditions per place. [2023-11-19 07:51:10,885 INFO L82 GeneralOperation]: Start removeDead. Operand has 563 places, 574 transitions, 1162 flow [2023-11-19 07:51:10,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 544 places, 553 transitions, 1115 flow [2023-11-19 07:51:10,912 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:51:10,926 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 544 places, 553 transitions, 1115 flow [2023-11-19 07:51:10,931 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 544 places, 553 transitions, 1115 flow [2023-11-19 07:51:10,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 544 places, 553 transitions, 1115 flow [2023-11-19 07:51:11,153 INFO L124 PetriNetUnfolderBase]: 16/553 cut-off events. [2023-11-19 07:51:11,153 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:51:11,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 553 events. 16/553 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 785 event pairs, 0 based on Foata normal form. 0/493 useless extension candidates. Maximal degree in co-relation 433. Up to 2 conditions per place. [2023-11-19 07:51:11,218 INFO L119 LiptonReduction]: Number of co-enabled transitions 88852 [2023-11-19 07:51:51,183 WARN L293 SmtUtils]: Spent 10.14s on a formula simplification that was a NOOP. DAG size: 197 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-19 07:51:59,335 WARN L293 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 191 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-19 07:51:59,367 INFO L134 LiptonReduction]: Checked pairs total: 709688 [2023-11-19 07:51:59,368 INFO L136 LiptonReduction]: Total number of compositions: 357 [2023-11-19 07:51:59,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:51:59,389 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41680873, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:51:59,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2023-11-19 07:51:59,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:51:59,391 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:51:59,391 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:51:59,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:51:59,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:51:59,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:51:59,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:59,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2015, now seen corresponding path program 1 times [2023-11-19 07:51:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:59,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367729800] [2023-11-19 07:51:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:59,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:59,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:59,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367729800] [2023-11-19 07:51:59,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367729800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:59,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:59,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:51:59,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174614394] [2023-11-19 07:51:59,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:59,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:51:59,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:51:59,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:51:59,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 558 out of 931 [2023-11-19 07:51:59,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 277 transitions, 563 flow. Second operand has 2 states, 2 states have (on average 558.5) internal successors, (1117), 2 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:59,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:51:59,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 558 of 931 [2023-11-19 07:51:59,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:52:02,283 INFO L124 PetriNetUnfolderBase]: 4521/13428 cut-off events. [2023-11-19 07:52:02,284 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-19 07:52:02,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20895 conditions, 13428 events. 4521/13428 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 117374 event pairs, 3999 based on Foata normal form. 230/12463 useless extension candidates. Maximal degree in co-relation 20442. Up to 7341 conditions per place. [2023-11-19 07:52:02,458 INFO L140 encePairwiseOnDemand]: 920/931 looper letters, 87 selfloop transitions, 0 changer transitions 0/266 dead transitions. [2023-11-19 07:52:02,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 266 transitions, 715 flow [2023-11-19 07:52:02,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:52:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:52:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1214 transitions. [2023-11-19 07:52:02,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6519871106337272 [2023-11-19 07:52:02,488 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1214 transitions. [2023-11-19 07:52:02,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1214 transitions. [2023-11-19 07:52:02,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:52:02,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1214 transitions. [2023-11-19 07:52:02,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 607.0) internal successors, (1214), 2 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:52:02,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 931.0) internal successors, (2793), 3 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:52:02,531 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 931.0) internal successors, (2793), 3 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:52:02,534 INFO L175 Difference]: Start difference. First operand has 273 places, 277 transitions, 563 flow. Second operand 2 states and 1214 transitions. [2023-11-19 07:52:02,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 266 transitions, 715 flow [2023-11-19 07:52:02,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 266 transitions, 710 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:52:02,560 INFO L231 Difference]: Finished difference. Result has 264 places, 266 transitions, 536 flow [2023-11-19 07:52:02,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=931, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=536, PETRI_PLACES=264, PETRI_TRANSITIONS=266} [2023-11-19 07:52:02,566 INFO L281 CegarLoopForPetriNet]: 273 programPoint places, -9 predicate places. [2023-11-19 07:52:02,567 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 266 transitions, 536 flow [2023-11-19 07:52:02,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 558.5) internal successors, (1117), 2 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:52:02,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:52:02,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:52:02,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:52:02,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:52:02,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:52:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1925543483, now seen corresponding path program 1 times [2023-11-19 07:52:02,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:52:02,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920203927] [2023-11-19 07:52:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:52:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:52:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:52:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:52:02,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:52:02,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920203927] [2023-11-19 07:52:02,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920203927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:52:02,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:52:02,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:52:02,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312310456] [2023-11-19 07:52:02,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:52:02,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:52:02,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:52:02,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:52:02,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:52:02,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 931 [2023-11-19 07:52:02,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 266 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 554.6666666666666) internal successors, (1664), 3 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:52:02,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:52:02,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 931 [2023-11-19 07:52:02,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand