./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.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_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl --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 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:33:39,081 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:33:39,205 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:33:39,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:33:39,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:33:39,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:33:39,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:33:39,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:33:39,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:33:39,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:33:39,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:33:39,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:33:39,266 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:33:39,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:33:39,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:33:39,269 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:33:39,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:33:39,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:33:39,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:33:39,271 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:33:39,271 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:33:39,272 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:33:39,272 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:33:39,273 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:33:39,273 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:33:39,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:33:39,274 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:33:39,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:33:39,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:33:39,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:33:39,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:33:39,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:33:39,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:33:39,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:33:39,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:33:39,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:33:39,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:33:39,278 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:33:39,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:33:39,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:33:39,279 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:33:39,279 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_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2023-11-12 02:33:39,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:33:39,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:33:39,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:33:39,625 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:33:39,625 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:33:39,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-12 02:33:42,608 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:33:43,027 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:33:43,029 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-12 02:33:43,060 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/data/2944eba2c/2c5256686bd94ff8a8864693bb9f6c0f/FLAG3d20487ca [2023-11-12 02:33:43,083 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/data/2944eba2c/2c5256686bd94ff8a8864693bb9f6c0f [2023-11-12 02:33:43,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:33:43,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:33:43,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:43,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:33:43,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:33:43,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:43" (1/1) ... [2023-11-12 02:33:43,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd98363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:43, skipping insertion in model container [2023-11-12 02:33:43,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:43" (1/1) ... [2023-11-12 02:33:43,194 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:33:43,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:43,925 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:33:43,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:44,056 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:33:44,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44 WrapperNode [2023-11-12 02:33:44,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:44,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:44,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:33:44,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:33:44,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (1/1) ... [2023-11-12 02:33:44,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (1/1) ... [2023-11-12 02:33:44,155 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 348 [2023-11-12 02:33:44,156 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:44,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:33:44,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:33:44,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:33:44,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (1/1) ... [2023-11-12 02:33:44,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (1/1) ... [2023-11-12 02:33:44,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (1/1) ... [2023-11-12 02:33:44,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (1/1) ... [2023-11-12 02:33:44,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (1/1) ... [2023-11-12 02:33:44,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (1/1) ... [2023-11-12 02:33:44,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (1/1) ... [2023-11-12 02:33:44,288 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (1/1) ... [2023-11-12 02:33:44,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:33:44,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:33:44,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:33:44,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:33:44,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (1/1) ... [2023-11-12 02:33:44,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:33:44,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:44,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:44,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f5a4be-e82b-4d85-bbd0-155da72043e4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:33:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:33:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:33:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-12 02:33:44,392 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-12 02:33:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:33:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:33:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-12 02:33:44,392 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-12 02:33:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:33:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:33:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:33:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:33:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:33:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:33:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:33:44,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:33:44,397 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:33:44,639 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:33:44,641 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:33:45,384 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:33:45,401 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:33:45,402 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-12 02:33:45,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:45 BoogieIcfgContainer [2023-11-12 02:33:45,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:33:45,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:33:45,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:33:45,415 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:33:45,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:33:43" (1/3) ... [2023-11-12 02:33:45,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dec9996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:45, skipping insertion in model container [2023-11-12 02:33:45,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:44" (2/3) ... [2023-11-12 02:33:45,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dec9996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:45, skipping insertion in model container [2023-11-12 02:33:45,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:45" (3/3) ... [2023-11-12 02:33:45,419 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-11-12 02:33:45,428 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:33:45,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:33:45,441 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-12 02:33:45,441 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:33:45,644 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 02:33:45,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 379 transitions, 778 flow [2023-11-12 02:33:46,034 INFO L124 PetriNetUnfolderBase]: 56/686 cut-off events. [2023-11-12 02:33:46,036 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-12 02:33:46,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 686 events. 56/686 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3262 event pairs, 0 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2023-11-12 02:33:46,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 379 transitions, 778 flow [2023-11-12 02:33:46,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 379 transitions, 778 flow [2023-11-12 02:33:46,121 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:33:46,133 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 358 places, 379 transitions, 778 flow [2023-11-12 02:33:46,136 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 358 places, 379 transitions, 778 flow [2023-11-12 02:33:46,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 379 transitions, 778 flow [2023-11-12 02:33:46,362 INFO L124 PetriNetUnfolderBase]: 56/686 cut-off events. [2023-11-12 02:33:46,362 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-12 02:33:46,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 686 events. 56/686 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3262 event pairs, 0 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2023-11-12 02:33:46,419 INFO L119 LiptonReduction]: Number of co-enabled transitions 51590 [2023-11-12 02:34:11,009 WARN L293 SmtUtils]: Spent 10.88s on a formula simplification. DAG size of input: 145 DAG size of output: 139 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-12 02:34:25,054 WARN L293 SmtUtils]: Spent 12.30s on a formula simplification. DAG size of input: 145 DAG size of output: 139 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-12 02:34:40,740 INFO L134 LiptonReduction]: Checked pairs total: 236701 [2023-11-12 02:34:40,740 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-11-12 02:34:40,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:34:40,760 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c8ff9e8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:34:40,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-12 02:34:40,764 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:34:40,764 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-12 02:34:40,764 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:34:40,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:40,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:34:40,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-12 02:34:40,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:40,771 INFO L85 PathProgramCache]: Analyzing trace with hash 44027, now seen corresponding path program 1 times [2023-11-12 02:34:40,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:40,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934008331] [2023-11-12 02:34:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:40,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:40,960 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 02:34:40,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:40,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934008331] [2023-11-12 02:34:40,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934008331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:40,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:40,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:34:40,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22739100] [2023-11-12 02:34:40,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:40,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:34:40,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:40,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:34:41,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:34:41,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 626 [2023-11-12 02:34:41,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 168 transitions, 356 flow. Second operand has 2 states, 2 states have (on average 355.0) internal successors, (710), 2 states have internal predecessors, (710), 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 02:34:41,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:41,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 626 [2023-11-12 02:34:41,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:44,550 INFO L124 PetriNetUnfolderBase]: 6989/18386 cut-off events. [2023-11-12 02:34:44,550 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-12 02:34:44,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29285 conditions, 18386 events. 6989/18386 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 177391 event pairs, 6594 based on Foata normal form. 766/17188 useless extension candidates. Maximal degree in co-relation 27593. Up to 10776 conditions per place.