./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 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_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ee95c6207d65de8bda179fc4eddfd8312f741d4c9ea2d4ac3b4363fbcaae8d19 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:11:40,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:11:40,453 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-12 00:11:40,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:11:40,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:11:40,486 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:11:40,487 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:11:40,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:11:40,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:11:40,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:11:40,489 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:11:40,490 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:11:40,490 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:11:40,491 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:11:40,492 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:11:40,492 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:11:40,493 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:11:40,493 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:11:40,494 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:11:40,495 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:11:40,495 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:11:40,496 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:11:40,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:11:40,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:11:40,498 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:11:40,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:11:40,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:11:40,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:11:40,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:11:40,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:11:40,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:11:40,502 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 00:11:40,503 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:11:40,503 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:11:40,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:11:40,504 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:11:40,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:11:40,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:11:40,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:40,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:11:40,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:11:40,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:11:40,506 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:11:40,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:11:40,507 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:11:40,507 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:11:40,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:11:40,507 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee95c6207d65de8bda179fc4eddfd8312f741d4c9ea2d4ac3b4363fbcaae8d19 [2023-11-12 00:11:40,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:11:40,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:11:40,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:11:40,784 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:11:40,785 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:11:40,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i [2023-11-12 00:11:44,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:11:44,413 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:11:44,414 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i [2023-11-12 00:11:44,448 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/data/582f04a31/6cd1d1df39194e40b6cbc50b75cff131/FLAGaf35c61ee [2023-11-12 00:11:44,466 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/data/582f04a31/6cd1d1df39194e40b6cbc50b75cff131 [2023-11-12 00:11:44,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:11:44,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:11:44,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:44,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:11:44,480 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:11:44,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:44" (1/1) ... [2023-11-12 00:11:44,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78854883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:44, skipping insertion in model container [2023-11-12 00:11:44,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:44" (1/1) ... [2023-11-12 00:11:44,544 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:11:45,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:45,239 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:11:45,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:45,389 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:11:45,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45 WrapperNode [2023-11-12 00:11:45,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:45,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:45,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:11:45,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:11:45,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (1/1) ... [2023-11-12 00:11:45,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (1/1) ... [2023-11-12 00:11:45,487 INFO L138 Inliner]: procedures = 323, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-12 00:11:45,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:45,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:11:45,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:11:45,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:11:45,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (1/1) ... [2023-11-12 00:11:45,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (1/1) ... [2023-11-12 00:11:45,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (1/1) ... [2023-11-12 00:11:45,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (1/1) ... [2023-11-12 00:11:45,563 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (1/1) ... [2023-11-12 00:11:45,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (1/1) ... [2023-11-12 00:11:45,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (1/1) ... [2023-11-12 00:11:45,575 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (1/1) ... [2023-11-12 00:11:45,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:11:45,582 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:11:45,582 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:11:45,582 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:11:45,583 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (1/1) ... [2023-11-12 00:11:45,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:45,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:45,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:11:45,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a68e371d-5e3f-4dd1-a1bc-de3f1f53c109/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:11:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:11:45,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:11:45,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:11:45,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-11-12 00:11:45,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-11-12 00:11:45,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 00:11:45,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 00:11:45,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 00:11:45,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 00:11:45,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 00:11:45,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 00:11:45,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:11:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:11:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:11:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:11:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:11:45,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:11:45,699 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:11:45,939 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:11:45,942 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:11:46,394 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:11:46,403 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:11:46,403 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:11:46,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:46 BoogieIcfgContainer [2023-11-12 00:11:46,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:11:46,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:11:46,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:11:46,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:11:46,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:11:44" (1/3) ... [2023-11-12 00:11:46,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756a5834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:46, skipping insertion in model container [2023-11-12 00:11:46,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:45" (2/3) ... [2023-11-12 00:11:46,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756a5834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:46, skipping insertion in model container [2023-11-12 00:11:46,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:46" (3/3) ... [2023-11-12 00:11:46,417 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems-b.i [2023-11-12 00:11:46,427 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:11:46,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:11:46,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-12 00:11:46,439 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:11:46,637 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-12 00:11:46,681 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:11:46,697 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 310 transitions, 717 flow [2023-11-12 00:11:46,700 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 310 transitions, 717 flow [2023-11-12 00:11:46,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 310 transitions, 717 flow [2023-11-12 00:11:46,812 INFO L124 PetriNetUnfolderBase]: 8/223 cut-off events. [2023-11-12 00:11:46,812 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 00:11:46,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 223 events. 8/223 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 233 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 194. Up to 3 conditions per place. [2023-11-12 00:11:46,826 INFO L119 LiptonReduction]: Number of co-enabled transitions 7920 [2023-11-12 00:11:54,463 INFO L134 LiptonReduction]: Checked pairs total: 53635 [2023-11-12 00:11:54,463 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-11-12 00:11:54,472 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 155 places, 144 transitions, 385 flow [2023-11-12 00:12:09,914 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 313775 states, 313364 states have (on average 5.12690034592359) internal successors, (1606586), 313774 states have internal predecessors, (1606586), 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) [2023-11-12 00:12:09,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:12:09,986 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=FINITE_AUTOMATA, 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;@51f41802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:12:09,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-12 00:12:10,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 313775 states, 313364 states have (on average 5.12690034592359) internal successors, (1606586), 313774 states have internal predecessors, (1606586), 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) [2023-11-12 00:12:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:12:10,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:10,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:12:10,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-12 00:12:10,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash 774954411, now seen corresponding path program 1 times [2023-11-12 00:12:10,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:10,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263888151] [2023-11-12 00:12:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:10,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:12:10,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:10,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263888151] [2023-11-12 00:12:10,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263888151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:10,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:12:10,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:12:10,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061333096] [2023-11-12 00:12:10,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:10,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:12:10,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:10,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:12:10,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:12:11,318 INFO L87 Difference]: Start difference. First operand has 313775 states, 313364 states have (on average 5.12690034592359) internal successors, (1606586), 313774 states have internal predecessors, (1606586), 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) Second operand has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-12 00:12:16,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:16,292 INFO L93 Difference]: Finished difference Result 188955 states and 950720 transitions. [2023-11-12 00:12:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:12:16,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2023-11-12 00:12:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:19,630 INFO L225 Difference]: With dead ends: 188955 [2023-11-12 00:12:19,631 INFO L226 Difference]: Without dead ends: 188950 [2023-11-12 00:12:19,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:12:19,636 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:19,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:12:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188950 states. [2023-11-12 00:12:29,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188950 to 188950. [2023-11-12 00:12:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188950 states, 188857 states have (on average 5.034015154323113) internal successors, (950709), 188949 states have internal predecessors, (950709), 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)