./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread/fib_unsafe-12.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d5255e9cc8ffb776115e75fa8fa1fa6c2774a79275dfd8235c357288b00417c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:00:36,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:00:36,422 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:00:36,426 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:00:36,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:00:36,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:00:36,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:00:36,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:00:36,462 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:00:36,462 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:00:36,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:00:36,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:00:36,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:00:36,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:00:36,464 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:00:36,465 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:00:36,465 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:00:36,465 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:00:36,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:00:36,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:00:36,466 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:00:36,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:00:36,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:00:36,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:00:36,468 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:00:36,468 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:00:36,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:00:36,469 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:00:36,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:00:36,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:00:36,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:00:36,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:00:36,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:00:36,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:00:36,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:00:36,471 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:00:36,471 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:00:36,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:00:36,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:00:36,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:00:36,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:00:36,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:00:36,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d5255e9cc8ffb776115e75fa8fa1fa6c2774a79275dfd8235c357288b00417c [2024-11-12 08:00:36,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:00:36,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:00:36,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:00:36,757 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:00:36,757 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:00:36,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-12.i [2024-11-12 08:00:38,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:00:38,394 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:00:38,394 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-12.i [2024-11-12 08:00:38,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b6eac434/69c6c5dfa5074af0914be2990c8510a1/FLAGec0c33da4 [2024-11-12 08:00:38,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b6eac434/69c6c5dfa5074af0914be2990c8510a1 [2024-11-12 08:00:38,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:00:38,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:00:38,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:00:38,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:00:38,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:00:38,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:00:38" (1/1) ... [2024-11-12 08:00:38,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@499e0011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:38, skipping insertion in model container [2024-11-12 08:00:38,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:00:38" (1/1) ... [2024-11-12 08:00:38,801 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:00:39,133 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-12.i[30243,30256] [2024-11-12 08:00:39,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:00:39,164 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:00:39,199 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-12.i[30243,30256] [2024-11-12 08:00:39,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:00:39,245 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:00:39,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39 WrapperNode [2024-11-12 08:00:39,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:00:39,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:00:39,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:00:39,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:00:39,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,275 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,302 INFO L138 Inliner]: procedures = 164, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-12 08:00:39,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:00:39,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:00:39,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:00:39,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:00:39,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,319 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,338 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 08:00:39,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:00:39,359 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:00:39,363 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:00:39,363 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:00:39,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (1/1) ... [2024-11-12 08:00:39,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:00:39,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:00:39,399 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) [2024-11-12 08:00:39,403 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 [2024-11-12 08:00:39,452 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-12 08:00:39,453 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-12 08:00:39,453 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-12 08:00:39,453 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-12 08:00:39,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:00:39,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:00:39,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:00:39,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:00:39,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:00:39,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:00:39,457 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:00:39,589 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:00:39,591 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:00:39,769 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:00:39,769 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:00:39,860 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:00:39,861 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 08:00:39,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:00:39 BoogieIcfgContainer [2024-11-12 08:00:39,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:00:39,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:00:39,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:00:39,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:00:39,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:00:38" (1/3) ... [2024-11-12 08:00:39,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f536ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:00:39, skipping insertion in model container [2024-11-12 08:00:39,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:00:39" (2/3) ... [2024-11-12 08:00:39,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f536ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:00:39, skipping insertion in model container [2024-11-12 08:00:39,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:00:39" (3/3) ... [2024-11-12 08:00:39,869 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-12.i [2024-11-12 08:00:39,884 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:00:39,885 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:00:39,885 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:00:39,929 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 08:00:39,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-11-12 08:00:39,990 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-12 08:00:39,994 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:00:39,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-12 08:00:40,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-11-12 08:00:40,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-11-12 08:00:40,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:00:40,018 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;@45c73f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:00:40,018 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-12 08:00:40,028 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:00:40,028 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-12 08:00:40,028 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:00:40,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:00:40,029 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:00:40,029 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:00:40,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:00:40,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1327058361, now seen corresponding path program 1 times [2024-11-12 08:00:40,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:00:40,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203060443] [2024-11-12 08:00:40,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:00:40,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:00:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:00:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:40,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:00:40,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203060443] [2024-11-12 08:00:40,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203060443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:00:40,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:00:40,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:00:40,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44637450] [2024-11-12 08:00:40,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:00:40,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:00:40,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:00:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:00:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:00:40,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-12 08:00:40,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-12 08:00:40,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:00:40,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-12 08:00:40,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:00:40,598 INFO L124 PetriNetUnfolderBase]: 115/223 cut-off events. [2024-11-12 08:00:40,599 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:00:40,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 223 events. 115/223 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 691 event pairs, 20 based on Foata normal form. 9/209 useless extension candidates. Maximal degree in co-relation 398. Up to 118 conditions per place. [2024-11-12 08:00:40,605 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 20 selfloop transitions, 2 changer transitions 1/33 dead transitions. [2024-11-12 08:00:40,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 118 flow [2024-11-12 08:00:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:00:40,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:00:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-11-12 08:00:40,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2024-11-12 08:00:40,620 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 61 transitions. [2024-11-12 08:00:40,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 118 flow [2024-11-12 08:00:40,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:00:40,627 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2024-11-12 08:00:40,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-12 08:00:40,634 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-11-12 08:00:40,634 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2024-11-12 08:00:40,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-12 08:00:40,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:00:40,635 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:00:40,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:00:40,636 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:00:40,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:00:40,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1785420741, now seen corresponding path program 1 times [2024-11-12 08:00:40,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:00:40,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646318292] [2024-11-12 08:00:40,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:00:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:00:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:00:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:40,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:00:40,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646318292] [2024-11-12 08:00:40,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646318292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:00:40,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299206833] [2024-11-12 08:00:40,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:00:40,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:00:40,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:00:40,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:00:40,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:00:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:00:40,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-12 08:00:40,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:00:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:40,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:00:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:40,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299206833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:00:40,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:00:40,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-12 08:00:40,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702766519] [2024-11-12 08:00:40,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:00:40,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:00:40,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:00:40,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:00:40,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:00:40,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-12 08:00:40,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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) [2024-11-12 08:00:40,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:00:40,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-12 08:00:40,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:00:41,033 INFO L124 PetriNetUnfolderBase]: 151/277 cut-off events. [2024-11-12 08:00:41,033 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:00:41,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 277 events. 151/277 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 799 event pairs, 20 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 569. Up to 91 conditions per place. [2024-11-12 08:00:41,040 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 38 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-11-12 08:00:41,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 53 transitions, 212 flow [2024-11-12 08:00:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:00:41,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:00:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-12 08:00:41,043 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2024-11-12 08:00:41,043 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 6 states and 118 transitions. [2024-11-12 08:00:41,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 53 transitions, 212 flow [2024-11-12 08:00:41,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:00:41,045 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 100 flow [2024-11-12 08:00:41,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-11-12 08:00:41,046 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-11-12 08:00:41,046 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 100 flow [2024-11-12 08:00:41,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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) [2024-11-12 08:00:41,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:00:41,047 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:00:41,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 08:00:41,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:00:41,253 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:00:41,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:00:41,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1099178439, now seen corresponding path program 2 times [2024-11-12 08:00:41,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:00:41,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979645921] [2024-11-12 08:00:41,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:00:41,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:00:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:00:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:41,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:00:41,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979645921] [2024-11-12 08:00:41,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979645921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:00:41,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124071193] [2024-11-12 08:00:41,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:00:41,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:00:41,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:00:41,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:00:41,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:00:41,518 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:00:41,519 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:00:41,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 08:00:41,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:00:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:41,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:00:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:41,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124071193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:00:41,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:00:41,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-12 08:00:41,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178802804] [2024-11-12 08:00:41,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:00:41,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 08:00:41,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:00:41,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 08:00:41,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-12 08:00:41,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-12 08:00:41,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 100 flow. Second operand has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 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) [2024-11-12 08:00:41,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:00:41,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-12 08:00:41,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:00:41,863 INFO L124 PetriNetUnfolderBase]: 259/439 cut-off events. [2024-11-12 08:00:41,863 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-11-12 08:00:41,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 439 events. 259/439 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1196 event pairs, 20 based on Foata normal form. 54/479 useless extension candidates. Maximal degree in co-relation 1091. Up to 109 conditions per place. [2024-11-12 08:00:41,869 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 74 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-11-12 08:00:41,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 95 transitions, 426 flow [2024-11-12 08:00:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 08:00:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 08:00:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-11-12 08:00:41,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6752873563218391 [2024-11-12 08:00:41,874 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 100 flow. Second operand 12 states and 235 transitions. [2024-11-12 08:00:41,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 95 transitions, 426 flow [2024-11-12 08:00:41,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 95 transitions, 412 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-12 08:00:41,882 INFO L231 Difference]: Finished difference. Result has 53 places, 35 transitions, 170 flow [2024-11-12 08:00:41,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=170, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2024-11-12 08:00:41,884 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-11-12 08:00:41,884 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 170 flow [2024-11-12 08:00:41,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 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) [2024-11-12 08:00:41,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:00:41,886 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:00:41,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 08:00:42,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-12 08:00:42,087 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:00:42,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:00:42,088 INFO L85 PathProgramCache]: Analyzing trace with hash -299417337, now seen corresponding path program 3 times [2024-11-12 08:00:42,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:00:42,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850476442] [2024-11-12 08:00:42,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:00:42,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:00:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:00:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:42,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:00:42,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850476442] [2024-11-12 08:00:42,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850476442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:00:42,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738925497] [2024-11-12 08:00:42,335 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:00:42,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:00:42,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:00:42,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:00:42,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:00:42,421 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-12 08:00:42,422 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:00:42,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 08:00:42,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:00:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:42,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:00:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:42,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738925497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:00:42,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:00:42,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-12 08:00:42,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647301554] [2024-11-12 08:00:42,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:00:42,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 08:00:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:00:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 08:00:42,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-12 08:00:42,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-12 08:00:42,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 170 flow. Second operand has 25 states, 25 states have (on average 13.28) internal successors, (332), 25 states have internal predecessors, (332), 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) [2024-11-12 08:00:42,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:00:42,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-12 08:00:42,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:00:43,043 INFO L124 PetriNetUnfolderBase]: 475/763 cut-off events. [2024-11-12 08:00:43,043 INFO L125 PetriNetUnfolderBase]: For 4203/4203 co-relation queries the response was YES. [2024-11-12 08:00:43,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 763 events. 475/763 cut-off events. For 4203/4203 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1994 event pairs, 20 based on Foata normal form. 108/857 useless extension candidates. Maximal degree in co-relation 2216. Up to 190 conditions per place. [2024-11-12 08:00:43,050 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 146 selfloop transitions, 23 changer transitions 0/179 dead transitions. [2024-11-12 08:00:43,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 179 transitions, 868 flow [2024-11-12 08:00:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 08:00:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 08:00:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 469 transitions. [2024-11-12 08:00:43,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6738505747126436 [2024-11-12 08:00:43,053 INFO L175 Difference]: Start difference. First operand has 53 places, 35 transitions, 170 flow. Second operand 24 states and 469 transitions. [2024-11-12 08:00:43,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 179 transitions, 868 flow [2024-11-12 08:00:43,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 179 transitions, 796 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-11-12 08:00:43,061 INFO L231 Difference]: Finished difference. Result has 83 places, 47 transitions, 290 flow [2024-11-12 08:00:43,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=290, PETRI_PLACES=83, PETRI_TRANSITIONS=47} [2024-11-12 08:00:43,062 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-11-12 08:00:43,062 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 47 transitions, 290 flow [2024-11-12 08:00:43,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.28) internal successors, (332), 25 states have internal predecessors, (332), 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) [2024-11-12 08:00:43,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:00:43,063 INFO L206 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:00:43,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 08:00:43,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:00:43,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:00:43,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:00:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1108070521, now seen corresponding path program 4 times [2024-11-12 08:00:43,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:00:43,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666653751] [2024-11-12 08:00:43,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:00:43,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:00:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:00:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:43,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:00:43,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666653751] [2024-11-12 08:00:43,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666653751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:00:43,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808037393] [2024-11-12 08:00:43,861 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:00:43,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:00:43,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:00:43,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:00:43,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 08:00:43,956 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:00:43,956 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:00:43,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-12 08:00:43,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:00:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:44,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:00:44,439 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:44,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808037393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:00:44,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:00:44,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 29 [2024-11-12 08:00:44,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93493021] [2024-11-12 08:00:44,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:00:44,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-12 08:00:44,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:00:44,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-12 08:00:44,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-12 08:00:44,444 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-12 08:00:44,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 47 transitions, 290 flow. Second operand has 29 states, 29 states have (on average 13.275862068965518) internal successors, (385), 29 states have internal predecessors, (385), 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) [2024-11-12 08:00:44,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:00:44,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-12 08:00:44,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:00:44,865 INFO L124 PetriNetUnfolderBase]: 547/871 cut-off events. [2024-11-12 08:00:44,865 INFO L125 PetriNetUnfolderBase]: For 9333/9333 co-relation queries the response was YES. [2024-11-12 08:00:44,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 871 events. 547/871 cut-off events. For 9333/9333 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2263 event pairs, 20 based on Foata normal form. 36/893 useless extension candidates. Maximal degree in co-relation 2648. Up to 184 conditions per place. [2024-11-12 08:00:44,872 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 170 selfloop transitions, 27 changer transitions 0/207 dead transitions. [2024-11-12 08:00:44,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 207 transitions, 1028 flow [2024-11-12 08:00:44,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-12 08:00:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-12 08:00:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 537 transitions. [2024-11-12 08:00:44,874 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6613300492610837 [2024-11-12 08:00:44,874 INFO L175 Difference]: Start difference. First operand has 83 places, 47 transitions, 290 flow. Second operand 28 states and 537 transitions. [2024-11-12 08:00:44,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 207 transitions, 1028 flow [2024-11-12 08:00:44,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 207 transitions, 924 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-11-12 08:00:44,886 INFO L231 Difference]: Finished difference. Result has 103 places, 51 transitions, 290 flow [2024-11-12 08:00:44,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=290, PETRI_PLACES=103, PETRI_TRANSITIONS=51} [2024-11-12 08:00:44,887 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-11-12 08:00:44,887 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 51 transitions, 290 flow [2024-11-12 08:00:44,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 13.275862068965518) internal successors, (385), 29 states have internal predecessors, (385), 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) [2024-11-12 08:00:44,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:00:44,888 INFO L206 CegarLoopForPetriNet]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:00:44,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 08:00:45,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:00:45,092 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:00:45,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:00:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash -451870969, now seen corresponding path program 5 times [2024-11-12 08:00:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:00:45,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778165805] [2024-11-12 08:00:45,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:00:45,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:00:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:00:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:47,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:00:47,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778165805] [2024-11-12 08:00:47,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778165805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:00:47,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765039131] [2024-11-12 08:00:47,242 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:00:47,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:00:47,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:00:47,244 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:00:47,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 08:00:47,366 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-12 08:00:47,366 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:00:47,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-12 08:00:47,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:00:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 300 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:49,258 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:00:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:00:51,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765039131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:00:51,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:00:51,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 97 [2024-11-12 08:00:51,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646889004] [2024-11-12 08:00:51,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:00:51,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-12 08:00:51,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:00:51,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-12 08:00:51,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1344, Invalid=8162, Unknown=0, NotChecked=0, Total=9506 [2024-11-12 08:00:51,739 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-12 08:00:51,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 51 transitions, 290 flow. Second operand has 98 states, 98 states have (on average 6.163265306122449) internal successors, (604), 98 states have internal predecessors, (604), 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) [2024-11-12 08:00:51,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:00:51,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-12 08:00:51,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:01:52,656 INFO L124 PetriNetUnfolderBase]: 41560/68527 cut-off events. [2024-11-12 08:01:52,656 INFO L125 PetriNetUnfolderBase]: For 263577/263577 co-relation queries the response was YES. [2024-11-12 08:01:52,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184894 conditions, 68527 events. 41560/68527 cut-off events. For 263577/263577 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 480204 event pairs, 106 based on Foata normal form. 0/67947 useless extension candidates. Maximal degree in co-relation 184850. Up to 8745 conditions per place. [2024-11-12 08:01:53,299 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 1018 selfloop transitions, 1691 changer transitions 1229/3941 dead transitions. [2024-11-12 08:01:53,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 3941 transitions, 26079 flow [2024-11-12 08:01:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2024-11-12 08:01:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2024-11-12 08:01:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 4116 transitions. [2024-11-12 08:01:53,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4623160732337414 [2024-11-12 08:01:53,321 INFO L175 Difference]: Start difference. First operand has 103 places, 51 transitions, 290 flow. Second operand 307 states and 4116 transitions. [2024-11-12 08:01:53,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 3941 transitions, 26079 flow [2024-11-12 08:01:53,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 3941 transitions, 22057 flow, removed 754 selfloop flow, removed 23 redundant places. [2024-11-12 08:01:53,666 INFO L231 Difference]: Finished difference. Result has 504 places, 1842 transitions, 11148 flow [2024-11-12 08:01:53,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=307, PETRI_FLOW=11148, PETRI_PLACES=504, PETRI_TRANSITIONS=1842} [2024-11-12 08:01:53,667 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 474 predicate places. [2024-11-12 08:01:53,667 INFO L471 AbstractCegarLoop]: Abstraction has has 504 places, 1842 transitions, 11148 flow [2024-11-12 08:01:53,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 6.163265306122449) internal successors, (604), 98 states have internal predecessors, (604), 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) [2024-11-12 08:01:53,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:01:53,670 INFO L206 CegarLoopForPetriNet]: trace histogram [26, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:01:53,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 08:01:53,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:01:53,871 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:01:53,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:01:53,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1479360037, now seen corresponding path program 1 times [2024-11-12 08:01:53,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:01:53,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863304629] [2024-11-12 08:01:53,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:01:53,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:01:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:01:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 353 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:01:56,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:01:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863304629] [2024-11-12 08:01:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863304629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:01:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686767782] [2024-11-12 08:01:56,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:01:56,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:01:56,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:01:56,209 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:01:56,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 08:01:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:01:56,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-12 08:01:56,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:01:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 300 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:01:58,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 353 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:00,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686767782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:00,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:00,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 103 [2024-11-12 08:02:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663949648] [2024-11-12 08:02:00,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:00,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-12 08:02:00,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:00,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-12 08:02:00,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1407, Invalid=9305, Unknown=0, NotChecked=0, Total=10712 [2024-11-12 08:02:00,282 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-12 08:02:00,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 1842 transitions, 11148 flow. Second operand has 104 states, 104 states have (on average 6.211538461538462) internal successors, (646), 104 states have internal predecessors, (646), 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) [2024-11-12 08:02:00,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:00,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-12 08:02:00,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand