./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/scull.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a 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_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/scull.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU --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 aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:01:50,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:01:50,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:01:50,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:01:50,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:01:50,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:01:50,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:01:50,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:01:50,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:01:50,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:01:50,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:01:50,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:01:50,940 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:01:50,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:01:50,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:01:50,942 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:01:50,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:01:50,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:01:50,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:01:50,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:01:50,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:01:50,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:01:50,945 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:01:50,945 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:01:50,945 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:01:50,946 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:01:50,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:01:50,946 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:01:50,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:01:50,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:01:50,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:01:50,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:50,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:01:50,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:01:50,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:01:50,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:01:50,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:01:50,950 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:01:50,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:01:50,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:01:50,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:01:50,951 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_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b [2024-10-31 22:01:51,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:01:51,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:01:51,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:01:51,292 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:01:51,293 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:01:51,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-atomic/scull.i Unable to find full path for "g++" [2024-10-31 22:01:53,797 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:01:54,181 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:01:54,185 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/sv-benchmarks/c/pthread-atomic/scull.i [2024-10-31 22:01:54,209 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/data/36eeefe65/fb533b3a518a42fe97d0ad3caaa3d788/FLAGce1aa7e24 [2024-10-31 22:01:54,237 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/data/36eeefe65/fb533b3a518a42fe97d0ad3caaa3d788 [2024-10-31 22:01:54,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:01:54,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:01:54,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:54,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:01:54,257 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:01:54,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:54" (1/1) ... [2024-10-31 22:01:54,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241f47a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:54, skipping insertion in model container [2024-10-31 22:01:54,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:54" (1/1) ... [2024-10-31 22:01:54,323 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:01:54,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:54,922 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:01:54,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:55,032 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:01:55,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55 WrapperNode [2024-10-31 22:01:55,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:55,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:55,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:01:55,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:01:55,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (1/1) ... [2024-10-31 22:01:55,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (1/1) ... [2024-10-31 22:01:55,111 INFO L138 Inliner]: procedures = 185, calls = 55, calls flagged for inlining = 32, calls inlined = 29, statements flattened = 531 [2024-10-31 22:01:55,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:55,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:01:55,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:01:55,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:01:55,122 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (1/1) ... [2024-10-31 22:01:55,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (1/1) ... [2024-10-31 22:01:55,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (1/1) ... [2024-10-31 22:01:55,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (1/1) ... [2024-10-31 22:01:55,139 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (1/1) ... [2024-10-31 22:01:55,142 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (1/1) ... [2024-10-31 22:01:55,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (1/1) ... [2024-10-31 22:01:55,147 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (1/1) ... [2024-10-31 22:01:55,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:01:55,152 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:01:55,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:01:55,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:01:55,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (1/1) ... [2024-10-31 22:01:55,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:55,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:55,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:01:55,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66b7afe1-61a5-4a60-88ef-b65fc8c55167/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:01:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:01:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:01:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:01:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:01:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:01:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:01:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure loader [2024-10-31 22:01:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure loader [2024-10-31 22:01:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:01:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:01:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:01:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:01:55,244 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:01:55,467 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:01:55,469 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:01:55,592 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L890: havoc scull_trim_#t~nondet9#1, scull_trim_#t~nondet10#1, scull_trim_#t~nondet11#1, scull_trim_#t~nondet12#1, scull_trim_~dev#1, scull_trim_~qset~0#1; [2024-10-31 22:01:55,592 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-1: havoc scull_trim_#in~dev#1;assume { :end_inline_scull_trim } true; [2024-10-31 22:01:55,592 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-2: assume -2147483648 <= scull_cleanup_module_#t~ret43#1 && scull_cleanup_module_#t~ret43#1 <= 2147483647; [2024-10-31 22:01:55,592 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-3: havoc scull_cleanup_module_#t~ret43#1; [2024-10-31 22:01:55,593 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L887: havoc scull_cleanup_module_#t~nondet42#1, scull_cleanup_module_#t~ret43#1, scull_cleanup_module_~dev~4#1;assume { :end_inline_scull_cleanup_module } true; [2024-10-31 22:01:55,593 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint scull_trim_returnLabel#1: scull_cleanup_module_#t~ret43#1 := scull_trim_#res#1; [2024-10-31 22:01:55,595 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L898: scull_init_module_#res#1 := scull_init_module_~result~0#1; [2024-10-31 22:01:56,395 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:01:56,395 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:01:56,445 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:01:56,446 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:01:56,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:56 BoogieIcfgContainer [2024-10-31 22:01:56,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:01:56,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:01:56,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:01:56,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:01:56,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:01:54" (1/3) ... [2024-10-31 22:01:56,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4695a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:56, skipping insertion in model container [2024-10-31 22:01:56,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:55" (2/3) ... [2024-10-31 22:01:56,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4695a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:56, skipping insertion in model container [2024-10-31 22:01:56,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:56" (3/3) ... [2024-10-31 22:01:56,461 INFO L112 eAbstractionObserver]: Analyzing ICFG scull.i [2024-10-31 22:01:56,482 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:01:56,483 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-10-31 22:01:56,483 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:01:56,783 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:01:56,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 580 places, 590 transitions, 1201 flow [2024-10-31 22:01:57,282 INFO L124 PetriNetUnfolderBase]: 20/587 cut-off events. [2024-10-31 22:01:57,283 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:01:57,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 587 events. 20/587 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1785 event pairs, 0 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 545. Up to 4 conditions per place. [2024-10-31 22:01:57,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 580 places, 590 transitions, 1201 flow [2024-10-31 22:01:57,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 572 places, 582 transitions, 1179 flow [2024-10-31 22:01:57,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:57,340 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=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;@25bd5dd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:57,341 INFO L334 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2024-10-31 22:01:57,356 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:01:57,357 INFO L124 PetriNetUnfolderBase]: 0/91 cut-off events. [2024-10-31 22:01:57,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:57,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:57,358 INFO L204 CegarLoopForPetriNet]: 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, 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] [2024-10-31 22:01:57,359 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2024-10-31 22:01:57,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:57,365 INFO L85 PathProgramCache]: Analyzing trace with hash 35039947, now seen corresponding path program 1 times [2024-10-31 22:01:57,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:57,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008504446] [2024-10-31 22:01:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:57,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:57,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008504446] [2024-10-31 22:01:57,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008504446] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:57,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:57,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:57,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474949141] [2024-10-31 22:01:57,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:57,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:57,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:57,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:57,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:57,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 558 out of 590 [2024-10-31 22:01:57,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 582 transitions, 1179 flow. Second operand has 3 states, 3 states have (on average 559.3333333333334) internal successors, (1678), 3 states have internal predecessors, (1678), 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) [2024-10-31 22:01:57,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:57,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 558 of 590 [2024-10-31 22:01:57,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:59,678 INFO L124 PetriNetUnfolderBase]: 246/4300 cut-off events. [2024-10-31 22:01:59,678 INFO L125 PetriNetUnfolderBase]: For 177/182 co-relation queries the response was YES. [2024-10-31 22:01:59,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 4300 events. 246/4300 cut-off events. For 177/182 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 36042 event pairs, 66 based on Foata normal form. 94/3895 useless extension candidates. Maximal degree in co-relation 4329. Up to 241 conditions per place. [2024-10-31 22:01:59,764 INFO L140 encePairwiseOnDemand]: 578/590 looper letters, 19 selfloop transitions, 2 changer transitions 0/568 dead transitions. [2024-10-31 22:01:59,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 568 transitions, 1199 flow [2024-10-31 22:01:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:59,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1705 transitions. [2024-10-31 22:01:59,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.963276836158192 [2024-10-31 22:01:59,797 INFO L175 Difference]: Start difference. First operand has 572 places, 582 transitions, 1179 flow. Second operand 3 states and 1705 transitions. [2024-10-31 22:01:59,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 568 transitions, 1199 flow [2024-10-31 22:01:59,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 568 transitions, 1187 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:01:59,822 INFO L231 Difference]: Finished difference. Result has 560 places, 566 transitions, 1148 flow [2024-10-31 22:01:59,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1148, PETRI_PLACES=560, PETRI_TRANSITIONS=566} [2024-10-31 22:01:59,830 INFO L277 CegarLoopForPetriNet]: 572 programPoint places, -12 predicate places. [2024-10-31 22:01:59,831 INFO L471 AbstractCegarLoop]: Abstraction has has 560 places, 566 transitions, 1148 flow [2024-10-31 22:01:59,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 559.3333333333334) internal successors, (1678), 3 states have internal predecessors, (1678), 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) [2024-10-31 22:01:59,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:59,833 INFO L204 CegarLoopForPetriNet]: 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, 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] [2024-10-31 22:01:59,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:01:59,835 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting loaderErr0ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2024-10-31 22:01:59,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:59,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1284230353, now seen corresponding path program 1 times [2024-10-31 22:01:59,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:59,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184010385] [2024-10-31 22:01:59,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:59,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:59,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:59,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184010385] [2024-10-31 22:01:59,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184010385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:59,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:59,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:59,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148958870] [2024-10-31 22:01:59,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:59,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:59,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:59,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:59,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:02:00,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 546 out of 590 [2024-10-31 22:02:00,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 566 transitions, 1148 flow. Second operand has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 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) [2024-10-31 22:02:00,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:00,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 546 of 590 [2024-10-31 22:02:00,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:06,382 INFO L124 PetriNetUnfolderBase]: 2478/25388 cut-off events. [2024-10-31 22:02:06,383 INFO L125 PetriNetUnfolderBase]: For 283/285 co-relation queries the response was YES. [2024-10-31 22:02:06,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28581 conditions, 25388 events. 2478/25388 cut-off events. For 283/285 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 334206 event pairs, 643 based on Foata normal form. 0/22285 useless extension candidates. Maximal degree in co-relation 20486. Up to 1919 conditions per place. [2024-10-31 22:02:06,754 INFO L140 encePairwiseOnDemand]: 572/590 looper letters, 43 selfloop transitions, 13 changer transitions 0/591 dead transitions. [2024-10-31 22:02:06,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 591 transitions, 1315 flow [2024-10-31 22:02:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1699 transitions. [2024-10-31 22:02:06,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9598870056497175 [2024-10-31 22:02:06,758 INFO L175 Difference]: Start difference. First operand has 560 places, 566 transitions, 1148 flow. Second operand 3 states and 1699 transitions. [2024-10-31 22:02:06,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 591 transitions, 1315 flow [2024-10-31 22:02:06,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 591 transitions, 1315 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:06,770 INFO L231 Difference]: Finished difference. Result has 564 places, 579 transitions, 1262 flow [2024-10-31 22:02:06,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1262, PETRI_PLACES=564, PETRI_TRANSITIONS=579} [2024-10-31 22:02:06,772 INFO L277 CegarLoopForPetriNet]: 572 programPoint places, -8 predicate places. [2024-10-31 22:02:06,772 INFO L471 AbstractCegarLoop]: Abstraction has has 564 places, 579 transitions, 1262 flow [2024-10-31 22:02:06,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 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) [2024-10-31 22:02:06,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:06,774 INFO L204 CegarLoopForPetriNet]: 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, 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, 1, 1, 1, 1] [2024-10-31 22:02:06,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:02:06,774 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting loaderErr1ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2024-10-31 22:02:06,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:06,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1589802457, now seen corresponding path program 1 times [2024-10-31 22:02:06,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:06,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520271353] [2024-10-31 22:02:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:06,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:06,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:06,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520271353] [2024-10-31 22:02:06,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520271353] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:06,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:06,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:02:06,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310034500] [2024-10-31 22:02:06,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:06,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:06,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:06,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:02:06,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 590 [2024-10-31 22:02:06,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 579 transitions, 1262 flow. Second operand has 3 states, 3 states have (on average 551.6666666666666) internal successors, (1655), 3 states have internal predecessors, (1655), 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) [2024-10-31 22:02:06,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:06,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 590 [2024-10-31 22:02:06,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:17,453 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1687] L781-3-->L781-4: Formula: (= |v_#race~dev_qset~0_22| 0) InVars {} OutVars{#race~dev_qset~0=|v_#race~dev_qset~0_22|} AuxVars[] AssignedVars[#race~dev_qset~0][374], [323#L930-4true, 592#true, 425#L781-4true, 585#(= |#race~i~0| 0), 447#L748-4true, 581#true, Black: 583#true, 589#(= |#race~dev_qset~0| 0), 89#L721-2true, Black: 587#true]) [2024-10-31 22:02:17,454 INFO L294 olderBase$Statistics]: this new event has 276 ancestors and is cut-off event [2024-10-31 22:02:17,454 INFO L297 olderBase$Statistics]: existing Event has 227 ancestors and is cut-off event [2024-10-31 22:02:17,455 INFO L297 olderBase$Statistics]: existing Event has 178 ancestors and is cut-off event [2024-10-31 22:02:17,455 INFO L297 olderBase$Statistics]: existing Event has 178 ancestors and is cut-off event [2024-10-31 22:02:17,545 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1687] L781-3-->L781-4: Formula: (= |v_#race~dev_qset~0_22| 0) InVars {} OutVars{#race~dev_qset~0=|v_#race~dev_qset~0_22|} AuxVars[] AssignedVars[#race~dev_qset~0][374], [323#L930-4true, 540#L748-5true, 592#true, 425#L781-4true, 585#(= |#race~i~0| 0), 581#true, Black: 583#true, 589#(= |#race~dev_qset~0| 0), 89#L721-2true, Black: 587#true]) [2024-10-31 22:02:17,545 INFO L294 olderBase$Statistics]: this new event has 277 ancestors and is cut-off event [2024-10-31 22:02:17,545 INFO L297 olderBase$Statistics]: existing Event has 179 ancestors and is cut-off event [2024-10-31 22:02:17,545 INFO L297 olderBase$Statistics]: existing Event has 228 ancestors and is cut-off event [2024-10-31 22:02:17,546 INFO L297 olderBase$Statistics]: existing Event has 179 ancestors and is cut-off event [2024-10-31 22:02:19,834 INFO L124 PetriNetUnfolderBase]: 5656/54677 cut-off events. [2024-10-31 22:02:19,834 INFO L125 PetriNetUnfolderBase]: For 1211/1232 co-relation queries the response was YES. [2024-10-31 22:02:20,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64677 conditions, 54677 events. 5656/54677 cut-off events. For 1211/1232 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 826872 event pairs, 2651 based on Foata normal form. 0/47691 useless extension candidates. Maximal degree in co-relation 34430. Up to 5376 conditions per place. [2024-10-31 22:02:20,748 INFO L140 encePairwiseOnDemand]: 579/590 looper letters, 36 selfloop transitions, 10 changer transitions 0/598 dead transitions. [2024-10-31 22:02:20,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 598 transitions, 1395 flow [2024-10-31 22:02:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1697 transitions. [2024-10-31 22:02:20,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9587570621468926 [2024-10-31 22:02:20,752 INFO L175 Difference]: Start difference. First operand has 564 places, 579 transitions, 1262 flow. Second operand 3 states and 1697 transitions. [2024-10-31 22:02:20,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 598 transitions, 1395 flow [2024-10-31 22:02:20,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 598 transitions, 1369 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:02:20,797 INFO L231 Difference]: Finished difference. Result has 566 places, 588 transitions, 1314 flow [2024-10-31 22:02:20,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1314, PETRI_PLACES=566, PETRI_TRANSITIONS=588} [2024-10-31 22:02:20,800 INFO L277 CegarLoopForPetriNet]: 572 programPoint places, -6 predicate places. [2024-10-31 22:02:20,801 INFO L471 AbstractCegarLoop]: Abstraction has has 566 places, 588 transitions, 1314 flow [2024-10-31 22:02:20,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 551.6666666666666) internal successors, (1655), 3 states have internal predecessors, (1655), 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) [2024-10-31 22:02:20,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:20,803 INFO L204 CegarLoopForPetriNet]: 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:20,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:02:20,804 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting loaderErr2ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2024-10-31 22:02:20,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:20,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1199262058, now seen corresponding path program 1 times [2024-10-31 22:02:20,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:20,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739593857] [2024-10-31 22:02:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:20,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:20,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739593857] [2024-10-31 22:02:20,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739593857] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:20,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:20,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:02:20,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095629869] [2024-10-31 22:02:20,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:20,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:20,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:20,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:20,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:02:20,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 555 out of 590 [2024-10-31 22:02:20,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 588 transitions, 1314 flow. Second operand has 3 states, 3 states have (on average 556.0) internal successors, (1668), 3 states have internal predecessors, (1668), 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) [2024-10-31 22:02:20,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:20,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 555 of 590 [2024-10-31 22:02:20,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand