./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:55:20,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:55:20,626 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:55:20,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:55:20,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:55:20,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:55:20,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:55:20,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:55:20,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:55:20,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:55:20,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:55:20,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:55:20,650 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:55:20,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:55:20,652 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:55:20,652 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:55:20,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:55:20,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:55:20,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:55:20,653 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:55:20,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:55:20,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:55:20,654 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:55:20,658 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:55:20,658 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:55:20,658 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:55:20,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:55:20,658 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:55:20,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:55:20,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:55:20,659 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:55:20,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:55:20,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:55:20,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:55:20,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:55:20,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:55:20,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:55:20,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:55:20,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:55:20,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:55:20,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:55:20,661 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2024-10-13 09:55:20,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:55:20,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:55:20,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:55:20,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:55:20,879 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:55:20,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2024-10-13 09:55:22,405 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:55:22,601 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:55:22,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2024-10-13 09:55:22,616 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acdd50743/9815576c81c6424a90292e6c2cc33f9e/FLAGaeefa88d4 [2024-10-13 09:55:22,627 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acdd50743/9815576c81c6424a90292e6c2cc33f9e [2024-10-13 09:55:22,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:55:22,631 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:55:22,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:55:22,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:55:22,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:55:22,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:55:22" (1/1) ... [2024-10-13 09:55:22,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618981e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:22, skipping insertion in model container [2024-10-13 09:55:22,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:55:22" (1/1) ... [2024-10-13 09:55:22,734 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:55:23,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:55:23,476 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:55:23,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:55:23,584 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:55:23,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23 WrapperNode [2024-10-13 09:55:23,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:55:23,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:55:23,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:55:23,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:55:23,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (1/1) ... [2024-10-13 09:55:23,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (1/1) ... [2024-10-13 09:55:23,652 INFO L138 Inliner]: procedures = 279, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 337 [2024-10-13 09:55:23,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:55:23,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:55:23,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:55:23,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:55:23,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (1/1) ... [2024-10-13 09:55:23,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (1/1) ... [2024-10-13 09:55:23,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (1/1) ... [2024-10-13 09:55:23,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (1/1) ... [2024-10-13 09:55:23,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (1/1) ... [2024-10-13 09:55:23,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (1/1) ... [2024-10-13 09:55:23,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (1/1) ... [2024-10-13 09:55:23,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (1/1) ... [2024-10-13 09:55:23,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:55:23,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:55:23,716 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:55:23,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:55:23,717 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (1/1) ... [2024-10-13 09:55:23,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:55:23,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:55:23,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 09:55:23,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 09:55:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 09:55:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-10-13 09:55:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-10-13 09:55:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-10-13 09:55:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 09:55:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:55:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:55:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-10-13 09:55:23,803 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-10-13 09:55:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:55:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:55:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 09:55:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:55:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-10-13 09:55:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:55:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:55:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:55:23,807 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:55:23,961 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:55:23,963 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:55:24,487 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:55:24,487 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:55:24,522 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:55:24,522 INFO L314 CfgBuilder]: Removed 15 assume(true) statements. [2024-10-13 09:55:24,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:55:24 BoogieIcfgContainer [2024-10-13 09:55:24,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:55:24,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:55:24,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:55:24,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:55:24,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:55:22" (1/3) ... [2024-10-13 09:55:24,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9ea7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:55:24, skipping insertion in model container [2024-10-13 09:55:24,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:23" (2/3) ... [2024-10-13 09:55:24,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9ea7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:55:24, skipping insertion in model container [2024-10-13 09:55:24,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:55:24" (3/3) ... [2024-10-13 09:55:24,530 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2024-10-13 09:55:24,543 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:55:24,544 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-13 09:55:24,544 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:55:24,645 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 09:55:24,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 364 transitions, 748 flow [2024-10-13 09:55:24,960 INFO L124 PetriNetUnfolderBase]: 54/683 cut-off events. [2024-10-13 09:55:24,960 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-13 09:55:24,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 683 events. 54/683 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3049 event pairs, 0 based on Foata normal form. 0/581 useless extension candidates. Maximal degree in co-relation 341. Up to 8 conditions per place. [2024-10-13 09:55:24,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 364 transitions, 748 flow [2024-10-13 09:55:24,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 364 transitions, 748 flow [2024-10-13 09:55:24,994 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:55:24,999 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5beecb0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:55:25,000 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-13 09:55:25,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:55:25,004 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-10-13 09:55:25,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:55:25,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:55:25,004 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:55:25,005 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-13 09:55:25,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:55:25,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1705346502, now seen corresponding path program 1 times [2024-10-13 09:55:25,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:55:25,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982428691] [2024-10-13 09:55:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:55:25,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:55:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:55:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:55:25,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:55:25,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982428691] [2024-10-13 09:55:25,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982428691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:55:25,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:55:25,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:55:25,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986003459] [2024-10-13 09:55:25,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:55:25,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:55:25,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:55:25,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:55:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:55:25,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 364 [2024-10-13 09:55:25,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 364 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:25,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:55:25,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 364 [2024-10-13 09:55:25,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:55:25,737 INFO L124 PetriNetUnfolderBase]: 184/2313 cut-off events. [2024-10-13 09:55:25,738 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-10-13 09:55:25,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 2313 events. 184/2313 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 17503 event pairs, 132 based on Foata normal form. 276/2358 useless extension candidates. Maximal degree in co-relation 1796. Up to 283 conditions per place. [2024-10-13 09:55:25,757 INFO L140 encePairwiseOnDemand]: 344/364 looper letters, 23 selfloop transitions, 2 changer transitions 0/344 dead transitions. [2024-10-13 09:55:25,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 344 transitions, 758 flow [2024-10-13 09:55:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:55:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:55:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1003 transitions. [2024-10-13 09:55:25,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9184981684981685 [2024-10-13 09:55:25,779 INFO L175 Difference]: Start difference. First operand has 345 places, 364 transitions, 748 flow. Second operand 3 states and 1003 transitions. [2024-10-13 09:55:25,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 344 transitions, 758 flow [2024-10-13 09:55:25,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 344 transitions, 758 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:55:25,791 INFO L231 Difference]: Finished difference. Result has 344 places, 344 transitions, 712 flow [2024-10-13 09:55:25,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=712, PETRI_PLACES=344, PETRI_TRANSITIONS=344} [2024-10-13 09:55:25,797 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, -1 predicate places. [2024-10-13 09:55:25,798 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 344 transitions, 712 flow [2024-10-13 09:55:25,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:25,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:55:25,799 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:55:25,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:55:25,799 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-13 09:55:25,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:55:25,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1730432236, now seen corresponding path program 1 times [2024-10-13 09:55:25,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:55:25,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371034150] [2024-10-13 09:55:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:55:25,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:55:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:55:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:55:25,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:55:25,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371034150] [2024-10-13 09:55:25,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371034150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:55:25,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:55:25,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:55:25,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204396892] [2024-10-13 09:55:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:55:25,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:55:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:55:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:55:25,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:55:25,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 364 [2024-10-13 09:55:25,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 344 transitions, 712 flow. Second operand has 3 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:25,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:55:25,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 364 [2024-10-13 09:55:25,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:55:26,186 INFO L124 PetriNetUnfolderBase]: 104/1813 cut-off events. [2024-10-13 09:55:26,186 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-10-13 09:55:26,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 1813 events. 104/1813 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 11394 event pairs, 72 based on Foata normal form. 0/1637 useless extension candidates. Maximal degree in co-relation 2012. Up to 185 conditions per place. [2024-10-13 09:55:26,201 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 22 selfloop transitions, 1 changer transitions 0/341 dead transitions. [2024-10-13 09:55:26,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 341 transitions, 752 flow [2024-10-13 09:55:26,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:55:26,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:55:26,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 986 transitions. [2024-10-13 09:55:26,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9029304029304029 [2024-10-13 09:55:26,204 INFO L175 Difference]: Start difference. First operand has 344 places, 344 transitions, 712 flow. Second operand 3 states and 986 transitions. [2024-10-13 09:55:26,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 341 transitions, 752 flow [2024-10-13 09:55:26,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 341 transitions, 748 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:55:26,209 INFO L231 Difference]: Finished difference. Result has 341 places, 341 transitions, 704 flow [2024-10-13 09:55:26,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=704, PETRI_PLACES=341, PETRI_TRANSITIONS=341} [2024-10-13 09:55:26,210 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, -4 predicate places. [2024-10-13 09:55:26,211 INFO L471 AbstractCegarLoop]: Abstraction has has 341 places, 341 transitions, 704 flow [2024-10-13 09:55:26,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:26,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:55:26,212 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:55:26,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:55:26,212 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-13 09:55:26,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:55:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash -348491465, now seen corresponding path program 1 times [2024-10-13 09:55:26,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:55:26,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220991702] [2024-10-13 09:55:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:55:26,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:55:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:55:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:55:26,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:55:26,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220991702] [2024-10-13 09:55:26,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220991702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:55:26,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:55:26,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:55:26,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621934267] [2024-10-13 09:55:26,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:55:26,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:55:26,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:55:26,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:55:26,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:55:26,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 364 [2024-10-13 09:55:26,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 341 transitions, 704 flow. Second operand has 6 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:26,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:55:26,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 364 [2024-10-13 09:55:26,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:55:34,695 INFO L124 PetriNetUnfolderBase]: 22238/59941 cut-off events. [2024-10-13 09:55:34,695 INFO L125 PetriNetUnfolderBase]: For 439/439 co-relation queries the response was YES. [2024-10-13 09:55:34,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94020 conditions, 59941 events. 22238/59941 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 702159 event pairs, 21418 based on Foata normal form. 0/55800 useless extension candidates. Maximal degree in co-relation 93973. Up to 33881 conditions per place. [2024-10-13 09:55:35,141 INFO L140 encePairwiseOnDemand]: 358/364 looper letters, 85 selfloop transitions, 5 changer transitions 0/340 dead transitions. [2024-10-13 09:55:35,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 340 transitions, 882 flow [2024-10-13 09:55:35,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:55:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:55:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1621 transitions. [2024-10-13 09:55:35,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7422161172161172 [2024-10-13 09:55:35,147 INFO L175 Difference]: Start difference. First operand has 341 places, 341 transitions, 704 flow. Second operand 6 states and 1621 transitions. [2024-10-13 09:55:35,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 340 transitions, 882 flow [2024-10-13 09:55:35,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 340 transitions, 881 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:55:35,166 INFO L231 Difference]: Finished difference. Result has 344 places, 340 transitions, 711 flow [2024-10-13 09:55:35,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=711, PETRI_PLACES=344, PETRI_TRANSITIONS=340} [2024-10-13 09:55:35,171 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, -1 predicate places. [2024-10-13 09:55:35,171 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 340 transitions, 711 flow [2024-10-13 09:55:35,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:35,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:55:35,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:55:35,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:55:35,172 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-13 09:55:35,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:55:35,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1360384625, now seen corresponding path program 1 times [2024-10-13 09:55:35,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:55:35,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098273707] [2024-10-13 09:55:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:55:35,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:55:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:55:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:55:35,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:55:35,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098273707] [2024-10-13 09:55:35,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098273707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:55:35,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:55:35,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:55:35,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731268071] [2024-10-13 09:55:35,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:55:35,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:55:35,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:55:35,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:55:35,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:55:35,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 364 [2024-10-13 09:55:35,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 340 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:35,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:55:35,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 364 [2024-10-13 09:55:35,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:55:43,160 INFO L124 PetriNetUnfolderBase]: 22238/59940 cut-off events. [2024-10-13 09:55:43,160 INFO L125 PetriNetUnfolderBase]: For 439/439 co-relation queries the response was YES. [2024-10-13 09:55:43,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94024 conditions, 59940 events. 22238/59940 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 702741 event pairs, 21418 based on Foata normal form. 0/55800 useless extension candidates. Maximal degree in co-relation 93977. Up to 33881 conditions per place. [2024-10-13 09:55:43,781 INFO L140 encePairwiseOnDemand]: 358/364 looper letters, 85 selfloop transitions, 5 changer transitions 0/339 dead transitions. [2024-10-13 09:55:43,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 339 transitions, 889 flow [2024-10-13 09:55:43,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:55:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:55:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1621 transitions. [2024-10-13 09:55:43,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7422161172161172 [2024-10-13 09:55:43,785 INFO L175 Difference]: Start difference. First operand has 344 places, 340 transitions, 711 flow. Second operand 6 states and 1621 transitions. [2024-10-13 09:55:43,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 339 transitions, 889 flow [2024-10-13 09:55:43,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 339 transitions, 879 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:55:43,799 INFO L231 Difference]: Finished difference. Result has 343 places, 339 transitions, 709 flow [2024-10-13 09:55:43,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=709, PETRI_PLACES=343, PETRI_TRANSITIONS=339} [2024-10-13 09:55:43,801 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, -2 predicate places. [2024-10-13 09:55:43,801 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 339 transitions, 709 flow [2024-10-13 09:55:43,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:43,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:55:43,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:55:43,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:55:43,805 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-13 09:55:43,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:55:43,808 INFO L85 PathProgramCache]: Analyzing trace with hash -763196836, now seen corresponding path program 1 times [2024-10-13 09:55:43,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:55:43,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184398184] [2024-10-13 09:55:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:55:43,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:55:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:55:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:55:44,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:55:44,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184398184] [2024-10-13 09:55:44,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184398184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:55:44,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:55:44,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:55:44,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929957445] [2024-10-13 09:55:44,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:55:44,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:55:44,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:55:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:55:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:55:44,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 364 [2024-10-13 09:55:44,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 339 transitions, 709 flow. Second operand has 6 states, 6 states have (on average 250.83333333333334) internal successors, (1505), 6 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:44,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:55:44,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 364 [2024-10-13 09:55:44,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:55:52,915 INFO L124 PetriNetUnfolderBase]: 25984/69415 cut-off events. [2024-10-13 09:55:52,915 INFO L125 PetriNetUnfolderBase]: For 439/439 co-relation queries the response was YES. [2024-10-13 09:55:53,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109235 conditions, 69415 events. 25984/69415 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 841109 event pairs, 24776 based on Foata normal form. 0/64547 useless extension candidates. Maximal degree in co-relation 109187. Up to 39469 conditions per place. [2024-10-13 09:55:53,259 INFO L140 encePairwiseOnDemand]: 337/364 looper letters, 105 selfloop transitions, 86 changer transitions 0/432 dead transitions. [2024-10-13 09:55:53,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 432 transitions, 1277 flow [2024-10-13 09:55:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:55:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:55:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1680 transitions. [2024-10-13 09:55:53,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7692307692307693 [2024-10-13 09:55:53,263 INFO L175 Difference]: Start difference. First operand has 343 places, 339 transitions, 709 flow. Second operand 6 states and 1680 transitions. [2024-10-13 09:55:53,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 432 transitions, 1277 flow [2024-10-13 09:55:53,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 432 transitions, 1267 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:55:53,279 INFO L231 Difference]: Finished difference. Result has 348 places, 424 transitions, 1265 flow [2024-10-13 09:55:53,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1265, PETRI_PLACES=348, PETRI_TRANSITIONS=424} [2024-10-13 09:55:53,282 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 3 predicate places. [2024-10-13 09:55:53,283 INFO L471 AbstractCegarLoop]: Abstraction has has 348 places, 424 transitions, 1265 flow [2024-10-13 09:55:53,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.83333333333334) internal successors, (1505), 6 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:53,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:55:53,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:55:53,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:55:53,284 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-13 09:55:53,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:55:53,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1200768640, now seen corresponding path program 1 times [2024-10-13 09:55:53,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:55:53,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630375906] [2024-10-13 09:55:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:55:53,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:55:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:55:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:55:53,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:55:53,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630375906] [2024-10-13 09:55:53,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630375906] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:55:53,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:55:53,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:55:53,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376053362] [2024-10-13 09:55:53,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:55:53,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:55:53,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:55:53,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:55:53,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:55:53,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 364 [2024-10-13 09:55:53,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 424 transitions, 1265 flow. Second operand has 3 states, 3 states have (on average 325.3333333333333) internal successors, (976), 3 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:53,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:55:53,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 364 [2024-10-13 09:55:53,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:55:53,615 INFO L124 PetriNetUnfolderBase]: 290/2400 cut-off events. [2024-10-13 09:55:53,615 INFO L125 PetriNetUnfolderBase]: For 199/204 co-relation queries the response was YES. [2024-10-13 09:55:53,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 2400 events. 290/2400 cut-off events. For 199/204 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 16921 event pairs, 94 based on Foata normal form. 1/2206 useless extension candidates. Maximal degree in co-relation 3250. Up to 237 conditions per place. [2024-10-13 09:55:53,636 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 22 selfloop transitions, 3 changer transitions 0/426 dead transitions. [2024-10-13 09:55:53,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 426 transitions, 1319 flow [2024-10-13 09:55:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:55:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:55:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 997 transitions. [2024-10-13 09:55:53,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.913003663003663 [2024-10-13 09:55:53,640 INFO L175 Difference]: Start difference. First operand has 348 places, 424 transitions, 1265 flow. Second operand 3 states and 997 transitions. [2024-10-13 09:55:53,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 426 transitions, 1319 flow [2024-10-13 09:55:53,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 426 transitions, 1319 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:55:53,648 INFO L231 Difference]: Finished difference. Result has 351 places, 424 transitions, 1276 flow [2024-10-13 09:55:53,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1276, PETRI_PLACES=351, PETRI_TRANSITIONS=424} [2024-10-13 09:55:53,651 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 6 predicate places. [2024-10-13 09:55:53,651 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 424 transitions, 1276 flow [2024-10-13 09:55:53,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.3333333333333) internal successors, (976), 3 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:53,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:55:53,652 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:55:53,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:55:53,653 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-13 09:55:53,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:55:53,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2117811036, now seen corresponding path program 1 times [2024-10-13 09:55:53,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:55:53,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245757715] [2024-10-13 09:55:53,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:55:53,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:55:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:55:53,688 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:55:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:55:53,739 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:55:53,739 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:55:53,740 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2024-10-13 09:55:53,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2024-10-13 09:55:53,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2024-10-13 09:55:53,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2024-10-13 09:55:53,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2024-10-13 09:55:53,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2024-10-13 09:55:53,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2024-10-13 09:55:53,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (30 of 38 remaining) [2024-10-13 09:55:53,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2024-10-13 09:55:53,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2024-10-13 09:55:53,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2024-10-13 09:55:53,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2024-10-13 09:55:53,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2024-10-13 09:55:53,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2024-10-13 09:55:53,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2024-10-13 09:55:53,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2024-10-13 09:55:53,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2024-10-13 09:55:53,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2024-10-13 09:55:53,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2024-10-13 09:55:53,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2024-10-13 09:55:53,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2024-10-13 09:55:53,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2024-10-13 09:55:53,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2024-10-13 09:55:53,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2024-10-13 09:55:53,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2024-10-13 09:55:53,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2024-10-13 09:55:53,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:55:53,750 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:55:53,754 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:55:53,754 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:55:53,855 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-10-13 09:55:53,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 548 places, 583 transitions, 1210 flow [2024-10-13 09:55:54,428 INFO L124 PetriNetUnfolderBase]: 197/1940 cut-off events. [2024-10-13 09:55:54,428 INFO L125 PetriNetUnfolderBase]: For 72/90 co-relation queries the response was YES. [2024-10-13 09:55:54,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 1940 events. 197/1940 cut-off events. For 72/90 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 13217 event pairs, 2 based on Foata normal form. 0/1634 useless extension candidates. Maximal degree in co-relation 1208. Up to 32 conditions per place. [2024-10-13 09:55:54,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 548 places, 583 transitions, 1210 flow [2024-10-13 09:55:54,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 548 places, 583 transitions, 1210 flow [2024-10-13 09:55:54,466 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:55:54,466 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5beecb0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:55:54,466 INFO L334 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2024-10-13 09:55:54,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:55:54,468 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-10-13 09:55:54,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:55:54,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:55:54,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:55:54,468 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2024-10-13 09:55:54,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:55:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash 325363226, now seen corresponding path program 1 times [2024-10-13 09:55:54,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:55:54,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343895072] [2024-10-13 09:55:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:55:54,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:55:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:55:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:55:54,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:55:54,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343895072] [2024-10-13 09:55:54,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343895072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:55:54,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:55:54,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:55:54,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332482390] [2024-10-13 09:55:54,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:55:54,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:55:54,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:55:54,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:55:54,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:55:54,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 507 out of 583 [2024-10-13 09:55:54,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 583 transitions, 1210 flow. Second operand has 3 states, 3 states have (on average 508.3333333333333) internal successors, (1525), 3 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:55:54,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:55:54,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 507 of 583 [2024-10-13 09:55:54,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand