./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme --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 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:48:12,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:48:12,338 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 11:48:12,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:48:12,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:48:12,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:48:12,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:48:12,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:48:12,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:48:12,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:48:12,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:48:12,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:48:12,393 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:48:12,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:48:12,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:48:12,397 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:48:12,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:48:12,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:48:12,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:48:12,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:48:12,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:48:12,401 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:48:12,401 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 11:48:12,402 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:48:12,403 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:48:12,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:48:12,404 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:48:12,405 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:48:12,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:48:12,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:48:12,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:12,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:48:12,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:48:12,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:48:12,409 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:48:12,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:48:12,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:48:12,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:48:12,410 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:48:12,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:48:12,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:48:12,412 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_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd [2023-11-26 11:48:12,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:48:12,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:48:12,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:48:12,789 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:48:12,790 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:48:12,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2023-11-26 11:48:16,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:16,369 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:16,370 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2023-11-26 11:48:16,390 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/data/32e8160d2/be01ee3e4d6f48d6a5988026c9f8c177/FLAG106f99745 [2023-11-26 11:48:16,417 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/data/32e8160d2/be01ee3e4d6f48d6a5988026c9f8c177 [2023-11-26 11:48:16,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:16,422 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:16,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:16,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:16,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:16,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:16" (1/1) ... [2023-11-26 11:48:16,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ea296a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:16, skipping insertion in model container [2023-11-26 11:48:16,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:16" (1/1) ... [2023-11-26 11:48:16,487 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:16,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:16,989 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:17,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:17,122 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:17,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17 WrapperNode [2023-11-26 11:48:17,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:17,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:17,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:17,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:17,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (1/1) ... [2023-11-26 11:48:17,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (1/1) ... [2023-11-26 11:48:17,261 INFO L138 Inliner]: procedures = 172, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 226 [2023-11-26 11:48:17,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:17,262 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:17,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:17,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:17,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (1/1) ... [2023-11-26 11:48:17,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (1/1) ... [2023-11-26 11:48:17,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (1/1) ... [2023-11-26 11:48:17,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (1/1) ... [2023-11-26 11:48:17,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (1/1) ... [2023-11-26 11:48:17,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (1/1) ... [2023-11-26 11:48:17,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (1/1) ... [2023-11-26 11:48:17,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (1/1) ... [2023-11-26 11:48:17,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:17,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:17,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:17,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:17,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (1/1) ... [2023-11-26 11:48:17,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:17,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:17,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:17,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af33c13c-879e-455b-9568-ca3160c0e3b9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:48:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-26 11:48:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-26 11:48:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-26 11:48:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-26 11:48:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:48:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:48:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:48:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:48:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:17,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:17,455 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:48:17,645 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:17,650 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:48:18,279 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:48:18,585 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:48:18,586 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:48:18,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:18 BoogieIcfgContainer [2023-11-26 11:48:18,588 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:48:18,590 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:48:18,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:48:18,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:48:18,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:16" (1/3) ... [2023-11-26 11:48:18,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe6c075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:18, skipping insertion in model container [2023-11-26 11:48:18,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:17" (2/3) ... [2023-11-26 11:48:18,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe6c075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:18, skipping insertion in model container [2023-11-26 11:48:18,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:18" (3/3) ... [2023-11-26 11:48:18,629 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-11-26 11:48:18,639 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:48:18,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:48:18,652 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-11-26 11:48:18,653 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:48:18,775 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:48:18,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 127 transitions, 262 flow [2023-11-26 11:48:18,877 INFO L124 PetriNetUnfolderBase]: 7/137 cut-off events. [2023-11-26 11:48:18,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:18,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 137 events. 7/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 214 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-11-26 11:48:18,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 127 transitions, 262 flow [2023-11-26 11:48:18,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 126 transitions, 259 flow [2023-11-26 11:48:18,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:18,909 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;@7bd34fab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:18,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-26 11:48:18,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:18,917 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2023-11-26 11:48:18,917 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:18,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:18,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:18,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2023-11-26 11:48:18,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2056045845, now seen corresponding path program 1 times [2023-11-26 11:48:18,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:18,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193529157] [2023-11-26 11:48:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:18,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:19,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:19,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193529157] [2023-11-26 11:48:19,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193529157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:19,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:19,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:48:19,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350862965] [2023-11-26 11:48:19,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:19,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:48:19,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:19,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:48:19,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:48:19,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 127 [2023-11-26 11:48:19,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 126 transitions, 259 flow. Second operand has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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) [2023-11-26 11:48:19,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:19,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 127 [2023-11-26 11:48:19,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:19,815 INFO L124 PetriNetUnfolderBase]: 16/200 cut-off events. [2023-11-26 11:48:19,816 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:48:19,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 200 events. 16/200 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 443 event pairs, 9 based on Foata normal form. 38/208 useless extension candidates. Maximal degree in co-relation 217. Up to 33 conditions per place. [2023-11-26 11:48:19,825 INFO L140 encePairwiseOnDemand]: 109/127 looper letters, 8 selfloop transitions, 0 changer transitions 0/98 dead transitions. [2023-11-26 11:48:19,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 219 flow [2023-11-26 11:48:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:48:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:48:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 226 transitions. [2023-11-26 11:48:19,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.889763779527559 [2023-11-26 11:48:19,844 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 226 transitions. [2023-11-26 11:48:19,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 226 transitions. [2023-11-26 11:48:19,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:19,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 226 transitions. [2023-11-26 11:48:19,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.0) internal successors, (226), 2 states have internal predecessors, (226), 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) [2023-11-26 11:48:19,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2023-11-26 11:48:19,866 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2023-11-26 11:48:19,868 INFO L175 Difference]: Start difference. First operand has 126 places, 126 transitions, 259 flow. Second operand 2 states and 226 transitions. [2023-11-26 11:48:19,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 219 flow [2023-11-26 11:48:19,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:48:19,879 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 202 flow [2023-11-26 11:48:19,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=202, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2023-11-26 11:48:19,886 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -24 predicate places. [2023-11-26 11:48:19,887 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 202 flow [2023-11-26 11:48:19,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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) [2023-11-26 11:48:19,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:19,888 INFO L208 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] [2023-11-26 11:48:19,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:48:19,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2023-11-26 11:48:19,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash -175075569, now seen corresponding path program 1 times [2023-11-26 11:48:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:19,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676018138] [2023-11-26 11:48:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:19,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:19,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:19,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676018138] [2023-11-26 11:48:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676018138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:19,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:19,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821992608] [2023-11-26 11:48:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:19,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:19,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:19,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:19,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:20,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 127 [2023-11-26 11:48:20,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2023-11-26 11:48:20,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:20,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 127 [2023-11-26 11:48:20,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:20,173 INFO L124 PetriNetUnfolderBase]: 120/535 cut-off events. [2023-11-26 11:48:20,173 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:48:20,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 535 events. 120/535 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2331 event pairs, 37 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 802. Up to 176 conditions per place. [2023-11-26 11:48:20,180 INFO L140 encePairwiseOnDemand]: 112/127 looper letters, 26 selfloop transitions, 10 changer transitions 0/107 dead transitions. [2023-11-26 11:48:20,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 295 flow [2023-11-26 11:48:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:20,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-11-26 11:48:20,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7454068241469817 [2023-11-26 11:48:20,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-11-26 11:48:20,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-11-26 11:48:20,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:20,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-11-26 11:48:20,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2023-11-26 11:48:20,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-26 11:48:20,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-26 11:48:20,190 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 202 flow. Second operand 3 states and 284 transitions. [2023-11-26 11:48:20,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 295 flow [2023-11-26 11:48:20,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:48:20,194 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 260 flow [2023-11-26 11:48:20,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2023-11-26 11:48:20,196 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -24 predicate places. [2023-11-26 11:48:20,196 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 260 flow [2023-11-26 11:48:20,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2023-11-26 11:48:20,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:20,197 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:20,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:48:20,198 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2023-11-26 11:48:20,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:20,199 INFO L85 PathProgramCache]: Analyzing trace with hash -83838233, now seen corresponding path program 1 times [2023-11-26 11:48:20,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:20,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250934153] [2023-11-26 11:48:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:20,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:20,216 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:48:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:20,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:48:20,254 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:48:20,255 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (43 of 44 remaining) [2023-11-26 11:48:20,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (42 of 44 remaining) [2023-11-26 11:48:20,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (41 of 44 remaining) [2023-11-26 11:48:20,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (40 of 44 remaining) [2023-11-26 11:48:20,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (39 of 44 remaining) [2023-11-26 11:48:20,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (38 of 44 remaining) [2023-11-26 11:48:20,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (37 of 44 remaining) [2023-11-26 11:48:20,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (36 of 44 remaining) [2023-11-26 11:48:20,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (35 of 44 remaining) [2023-11-26 11:48:20,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (34 of 44 remaining) [2023-11-26 11:48:20,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (33 of 44 remaining) [2023-11-26 11:48:20,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (32 of 44 remaining) [2023-11-26 11:48:20,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (31 of 44 remaining) [2023-11-26 11:48:20,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (30 of 44 remaining) [2023-11-26 11:48:20,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (29 of 44 remaining) [2023-11-26 11:48:20,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (28 of 44 remaining) [2023-11-26 11:48:20,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (27 of 44 remaining) [2023-11-26 11:48:20,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 44 remaining) [2023-11-26 11:48:20,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 44 remaining) [2023-11-26 11:48:20,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (24 of 44 remaining) [2023-11-26 11:48:20,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 44 remaining) [2023-11-26 11:48:20,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 44 remaining) [2023-11-26 11:48:20,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 44 remaining) [2023-11-26 11:48:20,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 44 remaining) [2023-11-26 11:48:20,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (19 of 44 remaining) [2023-11-26 11:48:20,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (18 of 44 remaining) [2023-11-26 11:48:20,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (17 of 44 remaining) [2023-11-26 11:48:20,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (16 of 44 remaining) [2023-11-26 11:48:20,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (15 of 44 remaining) [2023-11-26 11:48:20,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (14 of 44 remaining) [2023-11-26 11:48:20,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (13 of 44 remaining) [2023-11-26 11:48:20,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (12 of 44 remaining) [2023-11-26 11:48:20,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (11 of 44 remaining) [2023-11-26 11:48:20,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (10 of 44 remaining) [2023-11-26 11:48:20,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (9 of 44 remaining) [2023-11-26 11:48:20,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (8 of 44 remaining) [2023-11-26 11:48:20,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (7 of 44 remaining) [2023-11-26 11:48:20,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (6 of 44 remaining) [2023-11-26 11:48:20,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (5 of 44 remaining) [2023-11-26 11:48:20,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 44 remaining) [2023-11-26 11:48:20,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 44 remaining) [2023-11-26 11:48:20,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 44 remaining) [2023-11-26 11:48:20,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 44 remaining) [2023-11-26 11:48:20,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 44 remaining) [2023-11-26 11:48:20,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:48:20,270 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 11:48:20,273 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:48:20,274 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:48:20,403 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:48:20,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 220 transitions, 460 flow [2023-11-26 11:48:20,478 INFO L124 PetriNetUnfolderBase]: 9/218 cut-off events. [2023-11-26 11:48:20,478 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:48:20,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 218 events. 9/218 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 474 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 225. Up to 6 conditions per place. [2023-11-26 11:48:20,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 220 transitions, 460 flow [2023-11-26 11:48:20,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 194 transitions, 401 flow [2023-11-26 11:48:20,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:20,498 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;@7bd34fab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:20,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2023-11-26 11:48:20,505 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:20,505 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2023-11-26 11:48:20,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:20,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:20,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:20,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-26 11:48:20,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:20,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1250771250, now seen corresponding path program 1 times [2023-11-26 11:48:20,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:20,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457857569] [2023-11-26 11:48:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:20,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:20,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:20,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457857569] [2023-11-26 11:48:20,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457857569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:20,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:20,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:48:20,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62356578] [2023-11-26 11:48:20,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:20,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:48:20,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:48:20,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:48:20,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 220 [2023-11-26 11:48:20,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 194 transitions, 401 flow. Second operand has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 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) [2023-11-26 11:48:20,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:20,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 220 [2023-11-26 11:48:20,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:21,035 INFO L124 PetriNetUnfolderBase]: 152/1268 cut-off events. [2023-11-26 11:48:21,035 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-26 11:48:21,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1268 events. 152/1268 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 8383 event pairs, 119 based on Foata normal form. 211/1292 useless extension candidates. Maximal degree in co-relation 1540. Up to 243 conditions per place. [2023-11-26 11:48:21,057 INFO L140 encePairwiseOnDemand]: 194/220 looper letters, 13 selfloop transitions, 0 changer transitions 0/158 dead transitions. [2023-11-26 11:48:21,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 158 transitions, 355 flow [2023-11-26 11:48:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:48:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:48:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 375 transitions. [2023-11-26 11:48:21,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8522727272727273 [2023-11-26 11:48:21,064 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 375 transitions. [2023-11-26 11:48:21,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 375 transitions. [2023-11-26 11:48:21,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:21,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 375 transitions. [2023-11-26 11:48:21,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 187.5) internal successors, (375), 2 states have internal predecessors, (375), 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) [2023-11-26 11:48:21,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2023-11-26 11:48:21,074 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2023-11-26 11:48:21,074 INFO L175 Difference]: Start difference. First operand has 195 places, 194 transitions, 401 flow. Second operand 2 states and 375 transitions. [2023-11-26 11:48:21,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 158 transitions, 355 flow [2023-11-26 11:48:21,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 158 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:48:21,084 INFO L231 Difference]: Finished difference. Result has 163 places, 158 transitions, 328 flow [2023-11-26 11:48:21,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=163, PETRI_TRANSITIONS=158} [2023-11-26 11:48:21,088 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -32 predicate places. [2023-11-26 11:48:21,088 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 158 transitions, 328 flow [2023-11-26 11:48:21,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 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) [2023-11-26 11:48:21,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:21,089 INFO L208 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] [2023-11-26 11:48:21,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:48:21,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-26 11:48:21,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:21,093 INFO L85 PathProgramCache]: Analyzing trace with hash 599706130, now seen corresponding path program 1 times [2023-11-26 11:48:21,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:21,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955938663] [2023-11-26 11:48:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:21,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:21,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:21,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955938663] [2023-11-26 11:48:21,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955938663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:21,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:21,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:21,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025203850] [2023-11-26 11:48:21,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:21,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:21,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:21,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:21,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:21,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 220 [2023-11-26 11:48:21,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 158 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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) [2023-11-26 11:48:21,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:21,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 220 [2023-11-26 11:48:21,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:25,025 INFO L124 PetriNetUnfolderBase]: 6141/16066 cut-off events. [2023-11-26 11:48:25,026 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2023-11-26 11:48:25,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26292 conditions, 16066 events. 6141/16066 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 156319 event pairs, 2047 based on Foata normal form. 0/14085 useless extension candidates. Maximal degree in co-relation 26287. Up to 6244 conditions per place. [2023-11-26 11:48:25,251 INFO L140 encePairwiseOnDemand]: 185/220 looper letters, 60 selfloop transitions, 26 changer transitions 0/196 dead transitions. [2023-11-26 11:48:25,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 196 transitions, 584 flow [2023-11-26 11:48:25,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-11-26 11:48:25,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2023-11-26 11:48:25,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-11-26 11:48:25,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-11-26 11:48:25,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:25,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-11-26 11:48:25,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2023-11-26 11:48:25,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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) [2023-11-26 11:48:25,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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) [2023-11-26 11:48:25,261 INFO L175 Difference]: Start difference. First operand has 163 places, 158 transitions, 328 flow. Second operand 3 states and 485 transitions. [2023-11-26 11:48:25,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 196 transitions, 584 flow [2023-11-26 11:48:25,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 196 transitions, 584 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:48:25,269 INFO L231 Difference]: Finished difference. Result has 167 places, 184 transitions, 554 flow [2023-11-26 11:48:25,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=167, PETRI_TRANSITIONS=184} [2023-11-26 11:48:25,270 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -28 predicate places. [2023-11-26 11:48:25,270 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 184 transitions, 554 flow [2023-11-26 11:48:25,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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) [2023-11-26 11:48:25,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:25,271 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:25,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:48:25,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-26 11:48:25,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:25,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2133533615, now seen corresponding path program 1 times [2023-11-26 11:48:25,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:25,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675123639] [2023-11-26 11:48:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:25,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:25,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:48:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:25,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:48:25,334 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:48:25,334 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2023-11-26 11:48:25,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (63 of 65 remaining) [2023-11-26 11:48:25,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (62 of 65 remaining) [2023-11-26 11:48:25,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (61 of 65 remaining) [2023-11-26 11:48:25,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (60 of 65 remaining) [2023-11-26 11:48:25,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (59 of 65 remaining) [2023-11-26 11:48:25,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (58 of 65 remaining) [2023-11-26 11:48:25,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (57 of 65 remaining) [2023-11-26 11:48:25,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (56 of 65 remaining) [2023-11-26 11:48:25,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (55 of 65 remaining) [2023-11-26 11:48:25,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (54 of 65 remaining) [2023-11-26 11:48:25,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (53 of 65 remaining) [2023-11-26 11:48:25,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (52 of 65 remaining) [2023-11-26 11:48:25,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (51 of 65 remaining) [2023-11-26 11:48:25,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (50 of 65 remaining) [2023-11-26 11:48:25,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (49 of 65 remaining) [2023-11-26 11:48:25,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (48 of 65 remaining) [2023-11-26 11:48:25,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 65 remaining) [2023-11-26 11:48:25,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 65 remaining) [2023-11-26 11:48:25,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 65 remaining) [2023-11-26 11:48:25,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 65 remaining) [2023-11-26 11:48:25,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (43 of 65 remaining) [2023-11-26 11:48:25,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (42 of 65 remaining) [2023-11-26 11:48:25,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (41 of 65 remaining) [2023-11-26 11:48:25,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (40 of 65 remaining) [2023-11-26 11:48:25,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (39 of 65 remaining) [2023-11-26 11:48:25,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (38 of 65 remaining) [2023-11-26 11:48:25,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (37 of 65 remaining) [2023-11-26 11:48:25,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (36 of 65 remaining) [2023-11-26 11:48:25,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (35 of 65 remaining) [2023-11-26 11:48:25,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (34 of 65 remaining) [2023-11-26 11:48:25,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (33 of 65 remaining) [2023-11-26 11:48:25,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (32 of 65 remaining) [2023-11-26 11:48:25,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (31 of 65 remaining) [2023-11-26 11:48:25,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (30 of 65 remaining) [2023-11-26 11:48:25,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (29 of 65 remaining) [2023-11-26 11:48:25,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (28 of 65 remaining) [2023-11-26 11:48:25,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (27 of 65 remaining) [2023-11-26 11:48:25,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (26 of 65 remaining) [2023-11-26 11:48:25,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (25 of 65 remaining) [2023-11-26 11:48:25,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (24 of 65 remaining) [2023-11-26 11:48:25,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (23 of 65 remaining) [2023-11-26 11:48:25,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (22 of 65 remaining) [2023-11-26 11:48:25,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (21 of 65 remaining) [2023-11-26 11:48:25,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (20 of 65 remaining) [2023-11-26 11:48:25,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (19 of 65 remaining) [2023-11-26 11:48:25,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (18 of 65 remaining) [2023-11-26 11:48:25,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (17 of 65 remaining) [2023-11-26 11:48:25,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (16 of 65 remaining) [2023-11-26 11:48:25,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (15 of 65 remaining) [2023-11-26 11:48:25,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (14 of 65 remaining) [2023-11-26 11:48:25,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (13 of 65 remaining) [2023-11-26 11:48:25,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (12 of 65 remaining) [2023-11-26 11:48:25,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (11 of 65 remaining) [2023-11-26 11:48:25,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (10 of 65 remaining) [2023-11-26 11:48:25,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 65 remaining) [2023-11-26 11:48:25,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 65 remaining) [2023-11-26 11:48:25,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 65 remaining) [2023-11-26 11:48:25,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 65 remaining) [2023-11-26 11:48:25,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 65 remaining) [2023-11-26 11:48:25,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 65 remaining) [2023-11-26 11:48:25,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 65 remaining) [2023-11-26 11:48:25,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 65 remaining) [2023-11-26 11:48:25,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 65 remaining) [2023-11-26 11:48:25,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 65 remaining) [2023-11-26 11:48:25,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:48:25,355 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 11:48:25,356 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:48:25,356 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:48:25,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:48:25,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 313 transitions, 662 flow [2023-11-26 11:48:25,673 INFO L124 PetriNetUnfolderBase]: 11/299 cut-off events. [2023-11-26 11:48:25,673 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 11:48:25,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 299 events. 11/299 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 850 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 310. Up to 8 conditions per place. [2023-11-26 11:48:25,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 313 transitions, 662 flow [2023-11-26 11:48:25,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 262 transitions, 545 flow [2023-11-26 11:48:25,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:25,691 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;@7bd34fab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:25,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2023-11-26 11:48:25,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:25,695 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2023-11-26 11:48:25,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:25,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:25,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:25,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-11-26 11:48:25,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1826487270, now seen corresponding path program 1 times [2023-11-26 11:48:25,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:25,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158190869] [2023-11-26 11:48:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:25,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:25,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:25,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158190869] [2023-11-26 11:48:25,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158190869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:25,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:25,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:48:25,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404529584] [2023-11-26 11:48:25,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:25,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:48:25,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:25,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:48:25,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:48:25,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 313 [2023-11-26 11:48:25,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 262 transitions, 545 flow. Second operand has 2 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 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) [2023-11-26 11:48:25,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:25,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 313 [2023-11-26 11:48:25,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:27,829 INFO L124 PetriNetUnfolderBase]: 1128/7145 cut-off events. [2023-11-26 11:48:27,829 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2023-11-26 11:48:27,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9094 conditions, 7145 events. 1128/7145 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 74248 event pairs, 969 based on Foata normal form. 1084/7214 useless extension candidates. Maximal degree in co-relation 9067. Up to 1593 conditions per place. [2023-11-26 11:48:27,948 INFO L140 encePairwiseOnDemand]: 279/313 looper letters, 18 selfloop transitions, 0 changer transitions 0/218 dead transitions. [2023-11-26 11:48:27,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 218 transitions, 493 flow [2023-11-26 11:48:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:48:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:48:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 524 transitions. [2023-11-26 11:48:27,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8370607028753994 [2023-11-26 11:48:27,951 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 524 transitions. [2023-11-26 11:48:27,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 524 transitions. [2023-11-26 11:48:27,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:27,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 524 transitions. [2023-11-26 11:48:27,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 262.0) internal successors, (524), 2 states have internal predecessors, (524), 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) [2023-11-26 11:48:27,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 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) [2023-11-26 11:48:27,957 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 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) [2023-11-26 11:48:27,957 INFO L175 Difference]: Start difference. First operand has 264 places, 262 transitions, 545 flow. Second operand 2 states and 524 transitions. [2023-11-26 11:48:27,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 218 transitions, 493 flow [2023-11-26 11:48:27,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 218 transitions, 490 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-26 11:48:27,964 INFO L231 Difference]: Finished difference. Result has 224 places, 218 transitions, 454 flow [2023-11-26 11:48:27,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=454, PETRI_PLACES=224, PETRI_TRANSITIONS=218} [2023-11-26 11:48:27,965 INFO L281 CegarLoopForPetriNet]: 264 programPoint places, -40 predicate places. [2023-11-26 11:48:27,966 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 218 transitions, 454 flow [2023-11-26 11:48:27,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 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) [2023-11-26 11:48:27,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:27,967 INFO L208 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] [2023-11-26 11:48:27,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:48:27,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-11-26 11:48:27,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:27,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1387310166, now seen corresponding path program 1 times [2023-11-26 11:48:27,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:27,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603809238] [2023-11-26 11:48:27,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:27,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:27,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:27,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603809238] [2023-11-26 11:48:27,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603809238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:27,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:28,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:28,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291784066] [2023-11-26 11:48:28,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:28,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:28,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:28,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:28,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 313 [2023-11-26 11:48:28,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 218 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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) [2023-11-26 11:48:28,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:28,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 313 [2023-11-26 11:48:28,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand