./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a0165632 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_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/singleton-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje --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 8df6b0e07576c0f44be76a2619065be37971886a948c5dcc3b73910d3c970468 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:06:34,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:06:34,205 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DataRace-32bit-Taipan_Default.epf [2024-11-09 07:06:34,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:06:34,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:06:34,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:06:34,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:06:34,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:06:34,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:06:34,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:06:34,242 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:06:34,242 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:06:34,242 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:06:34,243 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:06:34,244 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:06:34,244 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:06:34,245 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:06:34,245 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:06:34,246 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:06:34,246 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:06:34,247 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:06:34,251 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:06:34,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:06:34,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:06:34,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:06:34,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:06:34,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:06:34,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:06:34,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:06:34,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:06:34,275 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:06:34,276 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-09 07:06:34,276 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:06:34,277 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:06:34,277 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:06:34,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:06:34,278 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:06:34,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:06:34,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:06:34,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:06:34,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:06:34,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:06:34,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:06:34,281 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:06:34,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:06:34,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:06:34,282 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:06:34,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:06:34,283 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_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8df6b0e07576c0f44be76a2619065be37971886a948c5dcc3b73910d3c970468 [2024-11-09 07:06:34,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:06:34,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:06:34,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:06:34,703 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:06:34,704 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:06:34,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/pthread/singleton-b.i Unable to find full path for "g++" [2024-11-09 07:06:37,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:06:37,647 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:06:37,648 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/sv-benchmarks/c/pthread/singleton-b.i [2024-11-09 07:06:37,670 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/data/b52e49f02/535be963534b4c1fb82136123d3f14cb/FLAG2085246bd [2024-11-09 07:06:37,875 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/data/b52e49f02/535be963534b4c1fb82136123d3f14cb [2024-11-09 07:06:37,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:06:37,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:06:37,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:06:37,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:06:37,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:06:37,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:06:37" (1/1) ... [2024-11-09 07:06:37,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3672856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:37, skipping insertion in model container [2024-11-09 07:06:37,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:06:37" (1/1) ... [2024-11-09 07:06:37,969 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:06:38,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:06:38,856 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:06:38,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:06:39,067 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:06:39,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39 WrapperNode [2024-11-09 07:06:39,068 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:06:39,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:06:39,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:06:39,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:06:39,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (1/1) ... [2024-11-09 07:06:39,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (1/1) ... [2024-11-09 07:06:39,130 INFO L138 Inliner]: procedures = 322, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 34 [2024-11-09 07:06:39,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:06:39,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:06:39,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:06:39,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:06:39,145 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (1/1) ... [2024-11-09 07:06:39,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (1/1) ... [2024-11-09 07:06:39,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (1/1) ... [2024-11-09 07:06:39,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (1/1) ... [2024-11-09 07:06:39,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (1/1) ... [2024-11-09 07:06:39,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (1/1) ... [2024-11-09 07:06:39,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (1/1) ... [2024-11-09 07:06:39,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (1/1) ... [2024-11-09 07:06:39,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:06:39,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:06:39,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:06:39,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:06:39,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (1/1) ... [2024-11-09 07:06:39,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:06:39,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:06:39,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:06:39,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0809e9-bed0-4905-ab04-2dc10518d2e7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:06:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 07:06:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2024-11-09 07:06:39,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2024-11-09 07:06:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 07:06:39,293 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 07:06:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 07:06:39,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 07:06:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 07:06:39,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 07:06:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 07:06:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:06:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:06:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:06:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:06:39,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:06:39,301 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 07:06:39,512 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:06:39,515 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:06:39,800 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 07:06:39,800 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:06:39,818 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:06:39,819 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:06:39,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:06:39 BoogieIcfgContainer [2024-11-09 07:06:39,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:06:39,823 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:06:39,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:06:39,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:06:39,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:06:37" (1/3) ... [2024-11-09 07:06:39,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1943c0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:06:39, skipping insertion in model container [2024-11-09 07:06:39,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:39" (2/3) ... [2024-11-09 07:06:39,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1943c0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:06:39, skipping insertion in model container [2024-11-09 07:06:39,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:06:39" (3/3) ... [2024-11-09 07:06:39,832 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton-b.i [2024-11-09 07:06:39,858 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:06:39,859 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-09 07:06:39,859 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 07:06:40,129 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2024-11-09 07:06:40,187 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 202 places, 193 transitions, 483 flow [2024-11-09 07:06:59,843 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 307188 states, 307105 states have (on average 4.940212630859152) internal successors, (1517164), 307187 states have internal predecessors, (1517164), 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) [2024-11-09 07:06:59,939 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:06:59,961 INFO L333 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, 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;@2485fa8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:06:59,962 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-11-09 07:07:00,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 307188 states, 307105 states have (on average 4.940212630859152) internal successors, (1517164), 307187 states have internal predecessors, (1517164), 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) [2024-11-09 07:07:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 07:07:00,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:00,574 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:00,576 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-09 07:07:00,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:00,585 INFO L85 PathProgramCache]: Analyzing trace with hash -260483121, now seen corresponding path program 1 times [2024-11-09 07:07:00,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:00,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775269063] [2024-11-09 07:07:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:00,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:00,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:00,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775269063] [2024-11-09 07:07:00,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775269063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:00,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:00,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:07:00,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796811939] [2024-11-09 07:07:00,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:00,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:07:00,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:01,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:07:01,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:07:01,822 INFO L87 Difference]: Start difference. First operand has 307188 states, 307105 states have (on average 4.940212630859152) internal successors, (1517164), 307187 states have internal predecessors, (1517164), 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 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-11-09 07:07:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:13,116 INFO L93 Difference]: Finished difference Result 307188 states and 1517164 transitions. [2024-11-09 07:07:13,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:07:13,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2024-11-09 07:07:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:20,010 INFO L225 Difference]: With dead ends: 307188 [2024-11-09 07:07:20,010 INFO L226 Difference]: Without dead ends: 307179 [2024-11-09 07:07:20,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:07:20,170 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 6 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:20,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 207 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:07:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307179 states. [2024-11-09 07:07:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307179 to 307179. [2024-11-09 07:07:40,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307179 states, 307097 states have (on average 4.940272943076618) internal successors, (1517143), 307178 states have internal predecessors, (1517143), 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)