./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-race-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-race-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu --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 9c9074e122b1777f395c954ed30ab626f529c102cb2614b7e83435b6d498a843 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:30,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:30,515 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:47:30,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:30,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:30,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:30,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:30,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:30,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:30,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:30,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:30,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:30,578 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:30,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:30,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:30,580 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:30,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:30,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:30,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:30,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:30,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:30,583 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:30,584 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:47:30,584 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:30,585 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:30,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:30,586 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:30,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:30,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:30,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:30,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:30,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:30,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:30,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:30,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:30,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:30,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:30,591 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:30,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:30,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:30,592 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:30,592 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_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c9074e122b1777f395c954ed30ab626f529c102cb2614b7e83435b6d498a843 [2023-11-19 07:47:30,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:30,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:30,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:30,980 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:30,981 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:30,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-race-5.i [2023-11-19 07:47:34,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:34,818 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:34,819 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-race-5.i [2023-11-19 07:47:34,839 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/data/227ad94e1/8f5747cdc34545bcaf63c07e1f5e7073/FLAG687b776e4 [2023-11-19 07:47:34,854 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/data/227ad94e1/8f5747cdc34545bcaf63c07e1f5e7073 [2023-11-19 07:47:34,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:34,861 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:34,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:34,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:34,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:34,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fad41d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34, skipping insertion in model container [2023-11-19 07:47:34,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,929 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:35,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:35,313 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:35,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:35,420 WARN L675 CHandler]: The function pthread_detach is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:35,428 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:35,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35 WrapperNode [2023-11-19 07:47:35,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:35,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:35,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:35,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:35,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,491 INFO L138 Inliner]: procedures = 159, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-11-19 07:47:35,492 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:35,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:35,493 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:35,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:35,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:35,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:35,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:35,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:35,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (1/1) ... [2023-11-19 07:47:35,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:35,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:35,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:35,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbea8d0a-5945-4b29-9b19-06b6a3641da4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:47:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:47:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:47:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:47:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:47:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure pthread_detach [2023-11-19 07:47:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 07:47:35,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 07:47:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:35,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:35,628 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:47:35,769 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:35,771 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:36,061 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:36,072 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:36,072 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:47:36,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:36 BoogieIcfgContainer [2023-11-19 07:47:36,077 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:36,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:36,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:36,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:36,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:34" (1/3) ... [2023-11-19 07:47:36,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459cc65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:36, skipping insertion in model container [2023-11-19 07:47:36,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:35" (2/3) ... [2023-11-19 07:47:36,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459cc65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:36, skipping insertion in model container [2023-11-19 07:47:36,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:36" (3/3) ... [2023-11-19 07:47:36,103 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-counter-inner-race-5.i [2023-11-19 07:47:36,114 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:47:36,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:36,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:47:36,126 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:47:36,199 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:47:36,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 135 transitions, 274 flow [2023-11-19 07:47:36,332 INFO L124 PetriNetUnfolderBase]: 7/162 cut-off events. [2023-11-19 07:47:36,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:36,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 162 events. 7/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 215 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-11-19 07:47:36,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 135 transitions, 274 flow [2023-11-19 07:47:36,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 135 transitions, 274 flow [2023-11-19 07:47:36,357 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:36,370 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 135 transitions, 274 flow [2023-11-19 07:47:36,373 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 135 transitions, 274 flow [2023-11-19 07:47:36,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 135 transitions, 274 flow [2023-11-19 07:47:36,430 INFO L124 PetriNetUnfolderBase]: 7/162 cut-off events. [2023-11-19 07:47:36,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:36,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 162 events. 7/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 215 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-11-19 07:47:36,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 3956 [2023-11-19 07:47:40,361 INFO L134 LiptonReduction]: Checked pairs total: 13228 [2023-11-19 07:47:40,363 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-11-19 07:47:40,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:40,389 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;@167c211c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:40,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-19 07:47:40,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:40,394 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 07:47:40,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:40,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:40,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:47:40,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-19 07:47:40,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash 14282369, now seen corresponding path program 1 times [2023-11-19 07:47:40,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:40,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296868659] [2023-11-19 07:47:40,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:40,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:40,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:40,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296868659] [2023-11-19 07:47:40,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296868659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:40,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:40,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:40,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428240085] [2023-11-19 07:47:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:40,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:40,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:40,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:40,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:40,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 234 [2023-11-19 07:47:40,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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) [2023-11-19 07:47:40,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:40,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 234 [2023-11-19 07:47:40,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:41,011 INFO L124 PetriNetUnfolderBase]: 173/502 cut-off events. [2023-11-19 07:47:41,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:41,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 502 events. 173/502 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2558 event pairs, 55 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 841. Up to 199 conditions per place. [2023-11-19 07:47:41,042 INFO L140 encePairwiseOnDemand]: 223/234 looper letters, 40 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-11-19 07:47:41,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 214 flow [2023-11-19 07:47:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2023-11-19 07:47:41,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5883190883190883 [2023-11-19 07:47:41,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2023-11-19 07:47:41,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2023-11-19 07:47:41,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:41,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2023-11-19 07:47:41,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 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) [2023-11-19 07:47:41,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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) [2023-11-19 07:47:41,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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) [2023-11-19 07:47:41,087 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 92 flow. Second operand 3 states and 413 transitions. [2023-11-19 07:47:41,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 214 flow [2023-11-19 07:47:41,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 214 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:47:41,094 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 126 flow [2023-11-19 07:47:41,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-19 07:47:41,102 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2023-11-19 07:47:41,102 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 126 flow [2023-11-19 07:47:41,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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) [2023-11-19 07:47:41,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:41,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:47:41,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:47:41,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-19 07:47:41,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash 852753438, now seen corresponding path program 1 times [2023-11-19 07:47:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:41,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333581426] [2023-11-19 07:47:41,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:41,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:41,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:47:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:41,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:47:41,255 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:47:41,257 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-11-19 07:47:41,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2023-11-19 07:47:41,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2023-11-19 07:47:41,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2023-11-19 07:47:41,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2023-11-19 07:47:41,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2023-11-19 07:47:41,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2023-11-19 07:47:41,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2023-11-19 07:47:41,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2023-11-19 07:47:41,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2023-11-19 07:47:41,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2023-11-19 07:47:41,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2023-11-19 07:47:41,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2023-11-19 07:47:41,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2023-11-19 07:47:41,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:47:41,266 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:47:41,269 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:47:41,269 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:47:41,320 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:47:41,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 179 transitions, 368 flow [2023-11-19 07:47:41,383 INFO L124 PetriNetUnfolderBase]: 10/251 cut-off events. [2023-11-19 07:47:41,383 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:47:41,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 251 events. 10/251 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 467 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 163. Up to 6 conditions per place. [2023-11-19 07:47:41,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 179 transitions, 368 flow [2023-11-19 07:47:41,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 179 transitions, 368 flow [2023-11-19 07:47:41,389 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:41,389 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 179 transitions, 368 flow [2023-11-19 07:47:41,390 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 179 transitions, 368 flow [2023-11-19 07:47:41,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 179 transitions, 368 flow [2023-11-19 07:47:41,444 INFO L124 PetriNetUnfolderBase]: 10/251 cut-off events. [2023-11-19 07:47:41,447 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:47:41,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 251 events. 10/251 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 467 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 163. Up to 6 conditions per place. [2023-11-19 07:47:41,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 11696 [2023-11-19 07:47:45,059 INFO L134 LiptonReduction]: Checked pairs total: 54464 [2023-11-19 07:47:45,059 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-11-19 07:47:45,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:45,063 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;@167c211c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:45,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 07:47:45,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:45,067 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 07:47:45,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:45,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:45,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:47:45,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:47:45,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:45,068 INFO L85 PathProgramCache]: Analyzing trace with hash 24594146, now seen corresponding path program 1 times [2023-11-19 07:47:45,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:45,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690099166] [2023-11-19 07:47:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:45,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:45,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:45,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690099166] [2023-11-19 07:47:45,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690099166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:45,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:45,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:45,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225903577] [2023-11-19 07:47:45,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:45,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:45,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:45,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:45,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:45,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 291 [2023-11-19 07:47:45,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2023-11-19 07:47:45,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:45,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 291 [2023-11-19 07:47:45,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:47,064 INFO L124 PetriNetUnfolderBase]: 8114/15932 cut-off events. [2023-11-19 07:47:47,065 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-11-19 07:47:47,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28729 conditions, 15932 events. 8114/15932 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 133292 event pairs, 3051 based on Foata normal form. 0/14245 useless extension candidates. Maximal degree in co-relation 17206. Up to 6711 conditions per place. [2023-11-19 07:47:47,273 INFO L140 encePairwiseOnDemand]: 270/291 looper letters, 75 selfloop transitions, 14 changer transitions 0/113 dead transitions. [2023-11-19 07:47:47,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 113 transitions, 419 flow [2023-11-19 07:47:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:47,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 563 transitions. [2023-11-19 07:47:47,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6449026345933563 [2023-11-19 07:47:47,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 563 transitions. [2023-11-19 07:47:47,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 563 transitions. [2023-11-19 07:47:47,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:47,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 563 transitions. [2023-11-19 07:47:47,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 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) [2023-11-19 07:47:47,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-11-19 07:47:47,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-11-19 07:47:47,286 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 158 flow. Second operand 3 states and 563 transitions. [2023-11-19 07:47:47,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 113 transitions, 419 flow [2023-11-19 07:47:47,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 113 transitions, 419 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:47:47,291 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 276 flow [2023-11-19 07:47:47,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2023-11-19 07:47:47,292 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2023-11-19 07:47:47,293 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 276 flow [2023-11-19 07:47:47,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2023-11-19 07:47:47,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:47,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:47,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:47:47,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:47:47,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1437953893, now seen corresponding path program 1 times [2023-11-19 07:47:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:47,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416283248] [2023-11-19 07:47:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:47,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:47,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:47,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416283248] [2023-11-19 07:47:47,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416283248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:47,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:47,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:47,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302395776] [2023-11-19 07:47:47,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:47,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:47,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:47,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:47,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:47,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 291 [2023-11-19 07:47:47,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-11-19 07:47:47,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:47,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 291 [2023-11-19 07:47:47,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:49,621 INFO L124 PetriNetUnfolderBase]: 9002/17913 cut-off events. [2023-11-19 07:47:49,622 INFO L125 PetriNetUnfolderBase]: For 4703/4882 co-relation queries the response was YES. [2023-11-19 07:47:49,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37376 conditions, 17913 events. 9002/17913 cut-off events. For 4703/4882 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 156464 event pairs, 4088 based on Foata normal form. 4/16303 useless extension candidates. Maximal degree in co-relation 17375. Up to 9130 conditions per place. [2023-11-19 07:47:49,756 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 73 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-11-19 07:47:49,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 528 flow [2023-11-19 07:47:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:49,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-11-19 07:47:49,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6586483390607102 [2023-11-19 07:47:49,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-11-19 07:47:49,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-11-19 07:47:49,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:49,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-11-19 07:47:49,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 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) [2023-11-19 07:47:49,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-11-19 07:47:49,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-11-19 07:47:49,767 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 276 flow. Second operand 3 states and 575 transitions. [2023-11-19 07:47:49,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 120 transitions, 528 flow [2023-11-19 07:47:49,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 490 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:49,795 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 278 flow [2023-11-19 07:47:49,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2023-11-19 07:47:49,799 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 5 predicate places. [2023-11-19 07:47:49,799 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 278 flow [2023-11-19 07:47:49,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-11-19 07:47:49,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:49,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:49,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:47:49,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:47:49,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:49,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1970635949, now seen corresponding path program 1 times [2023-11-19 07:47:49,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350013710] [2023-11-19 07:47:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:49,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:49,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:49,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350013710] [2023-11-19 07:47:49,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350013710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:49,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:49,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:49,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677189569] [2023-11-19 07:47:49,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:49,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:49,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:49,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:49,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:49,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 291 [2023-11-19 07:47:49,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2023-11-19 07:47:49,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:49,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 291 [2023-11-19 07:47:49,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:52,068 INFO L124 PetriNetUnfolderBase]: 8463/17409 cut-off events. [2023-11-19 07:47:52,069 INFO L125 PetriNetUnfolderBase]: For 3420/3734 co-relation queries the response was YES. [2023-11-19 07:47:52,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36594 conditions, 17409 events. 8463/17409 cut-off events. For 3420/3734 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 157062 event pairs, 5128 based on Foata normal form. 77/15583 useless extension candidates. Maximal degree in co-relation 24058. Up to 11955 conditions per place. [2023-11-19 07:47:52,201 INFO L140 encePairwiseOnDemand]: 282/291 looper letters, 62 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2023-11-19 07:47:52,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 509 flow [2023-11-19 07:47:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2023-11-19 07:47:52,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242840778923253 [2023-11-19 07:47:52,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2023-11-19 07:47:52,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2023-11-19 07:47:52,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:52,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2023-11-19 07:47:52,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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) [2023-11-19 07:47:52,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-11-19 07:47:52,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-11-19 07:47:52,211 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 278 flow. Second operand 3 states and 545 transitions. [2023-11-19 07:47:52,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 509 flow [2023-11-19 07:47:52,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 116 transitions, 501 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:52,238 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 396 flow [2023-11-19 07:47:52,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2023-11-19 07:47:52,241 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2023-11-19 07:47:52,241 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 396 flow [2023-11-19 07:47:52,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2023-11-19 07:47:52,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:52,242 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:47:52,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:47:52,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:47:52,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:52,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1190628166, now seen corresponding path program 1 times [2023-11-19 07:47:52,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:52,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976258051] [2023-11-19 07:47:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:52,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:52,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:47:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:52,332 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:47:52,332 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:47:52,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-19 07:47:52,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-19 07:47:52,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-19 07:47:52,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-19 07:47:52,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-19 07:47:52,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-19 07:47:52,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-19 07:47:52,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-19 07:47:52,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-19 07:47:52,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-19 07:47:52,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-19 07:47:52,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-19 07:47:52,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-19 07:47:52,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-19 07:47:52,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-19 07:47:52,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-19 07:47:52,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-19 07:47:52,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-19 07:47:52,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-19 07:47:52,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:47:52,344 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:47:52,345 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:47:52,345 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:47:52,379 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:47:52,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 223 transitions, 464 flow [2023-11-19 07:47:52,461 INFO L124 PetriNetUnfolderBase]: 13/340 cut-off events. [2023-11-19 07:47:52,461 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:47:52,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 340 events. 13/340 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 712 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-11-19 07:47:52,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 223 transitions, 464 flow [2023-11-19 07:47:52,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 223 transitions, 464 flow [2023-11-19 07:47:52,466 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:52,467 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 223 transitions, 464 flow [2023-11-19 07:47:52,468 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 223 transitions, 464 flow [2023-11-19 07:47:52,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 223 transitions, 464 flow [2023-11-19 07:47:52,527 INFO L124 PetriNetUnfolderBase]: 13/340 cut-off events. [2023-11-19 07:47:52,527 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:47:52,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 340 events. 13/340 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 712 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-11-19 07:47:52,548 INFO L119 LiptonReduction]: Number of co-enabled transitions 23220 [2023-11-19 07:47:56,345 INFO L134 LiptonReduction]: Checked pairs total: 114749 [2023-11-19 07:47:56,346 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-11-19 07:47:56,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:56,353 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;@167c211c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:56,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-19 07:47:56,356 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:56,356 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 07:47:56,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:56,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:56,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:47:56,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 07:47:56,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash 36841279, now seen corresponding path program 1 times [2023-11-19 07:47:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:56,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830734072] [2023-11-19 07:47:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:56,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:56,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830734072] [2023-11-19 07:47:56,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830734072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:56,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:56,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:56,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284701896] [2023-11-19 07:47:56,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:56,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:56,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:56,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:56,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:56,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 354 [2023-11-19 07:47:56,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 101 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2023-11-19 07:47:56,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:56,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 354 [2023-11-19 07:47:56,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand