./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue.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_607e6b4d-60c3-453a-80d5-9043b43fb045/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/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_607e6b4d-60c3-453a-80d5-9043b43fb045/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/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_607e6b4d-60c3-453a-80d5-9043b43fb045/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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:48:10,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:48:10,747 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 10:48:10,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:48:10,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:48:10,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:48:10,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:48:10,800 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:48:10,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:48:10,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:48:10,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:48:10,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:48:10,810 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:48:10,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:48:10,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:48:10,813 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:48:10,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:48:10,814 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:48:10,814 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:48:10,815 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:48:10,815 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:48:10,816 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:48:10,816 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 10:48:10,817 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:48:10,817 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:48:10,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:48:10,818 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:48:10,819 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:48:10,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:48:10,820 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:48:10,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:10,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:48:10,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:48:10,822 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:48:10,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:48:10,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:48:10,823 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:48:10,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:48:10,824 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:48:10,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:48:10,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:48:10,825 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_607e6b4d-60c3-453a-80d5-9043b43fb045/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2023-11-26 10:48:11,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:48:11,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:48:11,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:48:11,154 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:48:11,155 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:48:11,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread/queue.i [2023-11-26 10:48:14,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:48:14,684 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:48:14,695 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/sv-benchmarks/c/pthread/queue.i [2023-11-26 10:48:14,724 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/bin/uautomizer-verify-VRDe98Ueme/data/da799de80/949b23421e544811a11defb2ca95eff2/FLAG27fb5eeef [2023-11-26 10:48:14,737 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/bin/uautomizer-verify-VRDe98Ueme/data/da799de80/949b23421e544811a11defb2ca95eff2 [2023-11-26 10:48:14,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:48:14,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:48:14,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:14,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:48:14,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:48:14,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:14" (1/1) ... [2023-11-26 10:48:14,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60dc1962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:14, skipping insertion in model container [2023-11-26 10:48:14,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:14" (1/1) ... [2023-11-26 10:48:14,801 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:48:15,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:15,535 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:48:15,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:15,755 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:48:15,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15 WrapperNode [2023-11-26 10:48:15,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:15,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:15,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:48:15,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:48:15,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:15,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:15,894 INFO L138 Inliner]: procedures = 275, calls = 74, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 509 [2023-11-26 10:48:15,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:15,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:48:15,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:48:15,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:48:15,906 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:15,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:15,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:15,922 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:15,964 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:15,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:15,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:15,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:15,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:48:15,987 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:48:15,987 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:48:15,987 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:48:15,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:15,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:16,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:16,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:48:16,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607e6b4d-60c3-453a-80d5-9043b43fb045/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:48:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-26 10:48:16,102 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-26 10:48:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-26 10:48:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-26 10:48:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:48:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:48:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:48:16,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 10:48:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 10:48:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:48:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:48:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 10:48:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:48:16,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:48:16,109 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 10:48:16,451 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:48:16,454 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:48:17,387 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:48:17,440 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:48:17,440 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:48:17,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:17 BoogieIcfgContainer [2023-11-26 10:48:17,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:48:17,446 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:48:17,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:48:17,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:48:17,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:48:14" (1/3) ... [2023-11-26 10:48:17,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3658a647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:17, skipping insertion in model container [2023-11-26 10:48:17,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (2/3) ... [2023-11-26 10:48:17,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3658a647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:17, skipping insertion in model container [2023-11-26 10:48:17,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:17" (3/3) ... [2023-11-26 10:48:17,457 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-11-26 10:48:17,467 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:48:17,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:48:17,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-26 10:48:17,480 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:48:17,802 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 10:48:17,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 566 places, 577 transitions, 1168 flow [2023-11-26 10:48:18,236 INFO L124 PetriNetUnfolderBase]: 18/575 cut-off events. [2023-11-26 10:48:18,236 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 10:48:18,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 575 events. 18/575 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 844 event pairs, 0 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 436. Up to 2 conditions per place. [2023-11-26 10:48:18,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 566 places, 577 transitions, 1168 flow [2023-11-26 10:48:18,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 547 places, 556 transitions, 1121 flow [2023-11-26 10:48:18,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:48:18,294 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;@1ec9cb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:48:18,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2023-11-26 10:48:18,302 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:48:18,303 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2023-11-26 10:48:18,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:48:18,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:18,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:18,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-26 10:48:18,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1367360892, now seen corresponding path program 1 times [2023-11-26 10:48:18,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:18,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109435683] [2023-11-26 10:48:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:18,593 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 10:48:18,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:18,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109435683] [2023-11-26 10:48:18,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109435683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:18,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:18,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:18,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228359796] [2023-11-26 10:48:18,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:18,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:18,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:18,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:18,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:18,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 577 [2023-11-26 10:48:18,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 556 transitions, 1121 flow. Second operand has 3 states, 3 states have (on average 546.3333333333334) internal successors, (1639), 3 states have internal predecessors, (1639), 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 10:48:18,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:18,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 577 [2023-11-26 10:48:18,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:19,371 INFO L124 PetriNetUnfolderBase]: 61/1681 cut-off events. [2023-11-26 10:48:19,372 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-26 10:48:19,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 1681 events. 61/1681 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 7836 event pairs, 27 based on Foata normal form. 37/1536 useless extension candidates. Maximal degree in co-relation 1600. Up to 70 conditions per place. [2023-11-26 10:48:19,399 INFO L140 encePairwiseOnDemand]: 568/577 looper letters, 15 selfloop transitions, 2 changer transitions 0/543 dead transitions. [2023-11-26 10:48:19,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 543 transitions, 1129 flow [2023-11-26 10:48:19,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:48:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1659 transitions. [2023-11-26 10:48:19,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9584055459272097 [2023-11-26 10:48:19,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1659 transitions. [2023-11-26 10:48:19,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1659 transitions. [2023-11-26 10:48:19,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:19,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1659 transitions. [2023-11-26 10:48:19,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 553.0) internal successors, (1659), 3 states have internal predecessors, (1659), 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 10:48:19,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 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 10:48:19,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 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 10:48:19,461 INFO L175 Difference]: Start difference. First operand has 547 places, 556 transitions, 1121 flow. Second operand 3 states and 1659 transitions. [2023-11-26 10:48:19,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 543 transitions, 1129 flow [2023-11-26 10:48:19,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 543 transitions, 1124 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:48:19,492 INFO L231 Difference]: Finished difference. Result has 539 places, 543 transitions, 1094 flow [2023-11-26 10:48:19,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1094, PETRI_PLACES=539, PETRI_TRANSITIONS=543} [2023-11-26 10:48:19,500 INFO L281 CegarLoopForPetriNet]: 547 programPoint places, -8 predicate places. [2023-11-26 10:48:19,501 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 543 transitions, 1094 flow [2023-11-26 10:48:19,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 546.3333333333334) internal successors, (1639), 3 states have internal predecessors, (1639), 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 10:48:19,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:19,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:19,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:48:19,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-26 10:48:19,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:19,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1650545712, now seen corresponding path program 1 times [2023-11-26 10:48:19,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:19,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406756090] [2023-11-26 10:48:19,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:19,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:19,649 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 10:48:19,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:19,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406756090] [2023-11-26 10:48:19,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406756090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:19,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:19,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:19,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6744212] [2023-11-26 10:48:19,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:19,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:19,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:19,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:19,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 577 [2023-11-26 10:48:19,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 543 transitions, 1094 flow. Second operand has 3 states, 3 states have (on average 546.3333333333334) internal successors, (1639), 3 states have internal predecessors, (1639), 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 10:48:19,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:19,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 577 [2023-11-26 10:48:19,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:20,337 INFO L124 PetriNetUnfolderBase]: 69/1962 cut-off events. [2023-11-26 10:48:20,337 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-26 10:48:20,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 1962 events. 69/1962 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 9949 event pairs, 29 based on Foata normal form. 0/1751 useless extension candidates. Maximal degree in co-relation 2011. Up to 74 conditions per place. [2023-11-26 10:48:20,363 INFO L140 encePairwiseOnDemand]: 574/577 looper letters, 15 selfloop transitions, 2 changer transitions 0/542 dead transitions. [2023-11-26 10:48:20,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 542 transitions, 1126 flow [2023-11-26 10:48:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:48:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1653 transitions. [2023-11-26 10:48:20,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9549393414211439 [2023-11-26 10:48:20,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1653 transitions. [2023-11-26 10:48:20,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1653 transitions. [2023-11-26 10:48:20,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:20,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1653 transitions. [2023-11-26 10:48:20,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 551.0) internal successors, (1653), 3 states have internal predecessors, (1653), 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 10:48:20,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 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 10:48:20,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 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 10:48:20,385 INFO L175 Difference]: Start difference. First operand has 539 places, 543 transitions, 1094 flow. Second operand 3 states and 1653 transitions. [2023-11-26 10:48:20,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 542 transitions, 1126 flow [2023-11-26 10:48:20,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 542 transitions, 1122 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:48:20,399 INFO L231 Difference]: Finished difference. Result has 538 places, 542 transitions, 1092 flow [2023-11-26 10:48:20,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1092, PETRI_PLACES=538, PETRI_TRANSITIONS=542} [2023-11-26 10:48:20,401 INFO L281 CegarLoopForPetriNet]: 547 programPoint places, -9 predicate places. [2023-11-26 10:48:20,402 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 542 transitions, 1092 flow [2023-11-26 10:48:20,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 546.3333333333334) internal successors, (1639), 3 states have internal predecessors, (1639), 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 10:48:20,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:20,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:20,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:48:20,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-26 10:48:20,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1695751660, now seen corresponding path program 1 times [2023-11-26 10:48:20,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:20,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127039264] [2023-11-26 10:48:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:20,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:21,198 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 10:48:21,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:21,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127039264] [2023-11-26 10:48:21,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127039264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:21,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:21,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:21,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138627841] [2023-11-26 10:48:21,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:21,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:21,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:21,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:21,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:22,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 577 [2023-11-26 10:48:22,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 542 transitions, 1092 flow. Second operand has 6 states, 6 states have (on average 413.3333333333333) internal successors, (2480), 6 states have internal predecessors, (2480), 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 10:48:22,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:22,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 577 [2023-11-26 10:48:22,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:42,431 INFO L124 PetriNetUnfolderBase]: 31243/86871 cut-off events. [2023-11-26 10:48:42,431 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-26 10:48:42,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133919 conditions, 86871 events. 31243/86871 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 958908 event pairs, 29490 based on Foata normal form. 0/79675 useless extension candidates. Maximal degree in co-relation 133871. Up to 46868 conditions per place. [2023-11-26 10:48:43,082 INFO L140 encePairwiseOnDemand]: 571/577 looper letters, 146 selfloop transitions, 5 changer transitions 0/541 dead transitions. [2023-11-26 10:48:43,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 541 transitions, 1392 flow [2023-11-26 10:48:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:43,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2624 transitions. [2023-11-26 10:48:43,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7579433853264009 [2023-11-26 10:48:43,093 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2624 transitions. [2023-11-26 10:48:43,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2624 transitions. [2023-11-26 10:48:43,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:43,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2624 transitions. [2023-11-26 10:48:43,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 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 10:48:43,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 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 10:48:43,118 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 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 10:48:43,118 INFO L175 Difference]: Start difference. First operand has 538 places, 542 transitions, 1092 flow. Second operand 6 states and 2624 transitions. [2023-11-26 10:48:43,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 541 transitions, 1392 flow [2023-11-26 10:48:43,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 541 transitions, 1388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:48:43,134 INFO L231 Difference]: Finished difference. Result has 540 places, 541 transitions, 1096 flow [2023-11-26 10:48:43,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1096, PETRI_PLACES=540, PETRI_TRANSITIONS=541} [2023-11-26 10:48:43,138 INFO L281 CegarLoopForPetriNet]: 547 programPoint places, -7 predicate places. [2023-11-26 10:48:43,138 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 541 transitions, 1096 flow [2023-11-26 10:48:43,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 413.3333333333333) internal successors, (2480), 6 states have internal predecessors, (2480), 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 10:48:43,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:43,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:43,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:48:43,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-26 10:48:43,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:43,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1012209044, now seen corresponding path program 1 times [2023-11-26 10:48:43,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:43,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767964938] [2023-11-26 10:48:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:43,623 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 10:48:43,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:43,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767964938] [2023-11-26 10:48:43,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767964938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:43,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:43,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:43,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65333040] [2023-11-26 10:48:43,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:43,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:43,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:43,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:43,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:44,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 577 [2023-11-26 10:48:44,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 541 transitions, 1096 flow. Second operand has 6 states, 6 states have (on average 413.3333333333333) internal successors, (2480), 6 states have internal predecessors, (2480), 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 10:48:44,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:44,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 577 [2023-11-26 10:48:44,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:02,255 INFO L124 PetriNetUnfolderBase]: 31243/86870 cut-off events. [2023-11-26 10:49:02,255 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-26 10:49:02,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133921 conditions, 86870 events. 31243/86870 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 958561 event pairs, 29490 based on Foata normal form. 0/79675 useless extension candidates. Maximal degree in co-relation 133857. Up to 46868 conditions per place. [2023-11-26 10:49:02,772 INFO L140 encePairwiseOnDemand]: 571/577 looper letters, 146 selfloop transitions, 5 changer transitions 0/540 dead transitions. [2023-11-26 10:49:02,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 540 transitions, 1396 flow [2023-11-26 10:49:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:49:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:49:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2624 transitions. [2023-11-26 10:49:02,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7579433853264009 [2023-11-26 10:49:02,782 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2624 transitions. [2023-11-26 10:49:02,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2624 transitions. [2023-11-26 10:49:02,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:02,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2624 transitions. [2023-11-26 10:49:02,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 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 10:49:02,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 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 10:49:02,808 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 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 10:49:02,808 INFO L175 Difference]: Start difference. First operand has 540 places, 541 transitions, 1096 flow. Second operand 6 states and 2624 transitions. [2023-11-26 10:49:02,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 540 transitions, 1396 flow [2023-11-26 10:49:02,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 540 transitions, 1386 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 10:49:02,825 INFO L231 Difference]: Finished difference. Result has 539 places, 540 transitions, 1094 flow [2023-11-26 10:49:02,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1094, PETRI_PLACES=539, PETRI_TRANSITIONS=540} [2023-11-26 10:49:02,829 INFO L281 CegarLoopForPetriNet]: 547 programPoint places, -8 predicate places. [2023-11-26 10:49:02,829 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 540 transitions, 1094 flow [2023-11-26 10:49:02,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 413.3333333333333) internal successors, (2480), 6 states have internal predecessors, (2480), 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 10:49:02,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:02,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:02,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:49:02,838 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-26 10:49:02,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:02,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1912269892, now seen corresponding path program 1 times [2023-11-26 10:49:02,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:02,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299835350] [2023-11-26 10:49:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:02,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:03,434 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 10:49:03,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:03,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299835350] [2023-11-26 10:49:03,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299835350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:03,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:03,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:49:03,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205007148] [2023-11-26 10:49:03,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:03,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:49:03,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:03,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:49:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:49:04,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 577 [2023-11-26 10:49:04,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 540 transitions, 1094 flow. Second operand has 6 states, 6 states have (on average 413.3333333333333) internal successors, (2480), 6 states have internal predecessors, (2480), 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 10:49:04,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:04,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 577 [2023-11-26 10:49:04,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand