./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:31:49,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:31:49,687 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:31:49,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:31:49,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:31:49,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:31:49,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:31:49,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:31:49,705 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:31:49,705 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:31:49,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:31:49,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:31:49,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:31:49,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:31:49,705 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:31:49,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:31:49,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:31:49,706 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:31:49,707 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:31:49,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:31:49,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:31:49,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:31:49,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:31:49,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:31:49,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:31:49,707 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:31:49,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:31:49,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:31:49,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:31:49,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:31:49,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:31:49,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:31:49,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:31:49,708 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 ! overflow) ) 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 -> 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 [2025-02-06 18:31:49,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:31:49,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:31:49,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:31:49,911 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:31:49,911 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:31:49,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2025-02-06 18:31:51,086 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ffa89f024/9bde7e38b2d247d6bc8bc83af716f107/FLAG044de22a8 [2025-02-06 18:31:51,406 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:31:51,406 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2025-02-06 18:31:51,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ffa89f024/9bde7e38b2d247d6bc8bc83af716f107/FLAG044de22a8 [2025-02-06 18:31:51,658 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ffa89f024/9bde7e38b2d247d6bc8bc83af716f107 [2025-02-06 18:31:51,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:31:51,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:31:51,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:31:51,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:31:51,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:31:51,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:51,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337d4df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51, skipping insertion in model container [2025-02-06 18:31:51,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:51,689 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:31:51,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:31:51,918 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:31:51,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:31:51,974 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:31:51,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51 WrapperNode [2025-02-06 18:31:51,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:31:51,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:31:51,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:31:51,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:31:51,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:51,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:52,002 INFO L138 Inliner]: procedures = 164, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2025-02-06 18:31:52,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:31:52,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:31:52,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:31:52,002 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:31:52,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:52,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:52,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:52,015 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-02-06 18:31:52,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:52,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:52,017 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:52,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:52,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:52,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:52,021 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:31:52,023 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:31:52,024 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:31:52,024 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:31:52,025 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (1/1) ... [2025-02-06 18:31:52,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:31:52,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:52,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:31:52,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:31:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2025-02-06 18:31:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2025-02-06 18:31:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-06 18:31:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-06 18:31:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:31:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:31:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:31:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:31:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:31:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:31:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:31:52,073 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:31:52,168 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:31:52,169 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:31:52,294 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:31:52,294 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:31:52,360 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:31:52,361 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:31:52,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:31:52 BoogieIcfgContainer [2025-02-06 18:31:52,364 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:31:52,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:31:52,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:31:52,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:31:52,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:31:51" (1/3) ... [2025-02-06 18:31:52,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a930ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:31:52, skipping insertion in model container [2025-02-06 18:31:52,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:51" (2/3) ... [2025-02-06 18:31:52,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a930ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:31:52, skipping insertion in model container [2025-02-06 18:31:52,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:31:52" (3/3) ... [2025-02-06 18:31:52,375 INFO L128 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2025-02-06 18:31:52,386 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:31:52,387 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 35_double_lock_p3_vs.i that has 3 procedures, 42 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-06 18:31:52,388 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:31:52,442 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:31:52,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2025-02-06 18:31:52,481 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2025-02-06 18:31:52,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:52,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 45 events. 2/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-02-06 18:31:52,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2025-02-06 18:31:52,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 43 transitions, 93 flow [2025-02-06 18:31:52,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:52,497 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;@2c6b7445, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:52,497 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-06 18:31:52,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:52,502 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2025-02-06 18:31:52,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:52,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:52,502 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:52,503 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-06 18:31:52,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:52,506 INFO L85 PathProgramCache]: Analyzing trace with hash -959948789, now seen corresponding path program 1 times [2025-02-06 18:31:52,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:52,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523762762] [2025-02-06 18:31:52,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:52,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:52,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:31:52,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:31:52,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:52,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:52,575 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:31:52,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:31:52,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:31:52,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:52,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:52,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:31:52,595 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:31:52,596 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-02-06 18:31:52,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2025-02-06 18:31:52,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-02-06 18:31:52,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-02-06 18:31:52,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2025-02-06 18:31:52,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2025-02-06 18:31:52,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-02-06 18:31:52,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-02-06 18:31:52,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-02-06 18:31:52,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2025-02-06 18:31:52,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-02-06 18:31:52,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2025-02-06 18:31:52,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-02-06 18:31:52,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2025-02-06 18:31:52,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-02-06 18:31:52,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-02-06 18:31:52,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-02-06 18:31:52,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-02-06 18:31:52,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:31:52,599 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-06 18:31:52,601 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:31:52,601 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 18:31:52,627 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:31:52,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 81 transitions, 182 flow [2025-02-06 18:31:52,677 INFO L124 PetriNetUnfolderBase]: 3/77 cut-off events. [2025-02-06 18:31:52,677 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:31:52,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 77 events. 3/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 168 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 84. Up to 3 conditions per place. [2025-02-06 18:31:52,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 81 transitions, 182 flow [2025-02-06 18:31:52,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 72 transitions, 157 flow [2025-02-06 18:31:52,684 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:52,684 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;@2c6b7445, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:52,684 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-02-06 18:31:52,692 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:52,692 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2025-02-06 18:31:52,692 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:31:52,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:52,692 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:52,692 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-06 18:31:52,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:52,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1375146803, now seen corresponding path program 1 times [2025-02-06 18:31:52,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:52,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785679805] [2025-02-06 18:31:52,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:52,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:31:52,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:31:52,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:52,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:52,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:52,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785679805] [2025-02-06 18:31:52,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785679805] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:52,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:52,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081392391] [2025-02-06 18:31:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:52,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:31:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:52,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:31:52,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:31:52,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2025-02-06 18:31:52,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2025-02-06 18:31:52,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:52,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2025-02-06 18:31:52,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:54,126 INFO L124 PetriNetUnfolderBase]: 9181/15996 cut-off events. [2025-02-06 18:31:54,126 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2025-02-06 18:31:54,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28960 conditions, 15996 events. 9181/15996 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 118349 event pairs, 2182 based on Foata normal form. 1991/16478 useless extension candidates. Maximal degree in co-relation 28949. Up to 10173 conditions per place. [2025-02-06 18:31:54,204 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 84 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2025-02-06 18:31:54,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 118 transitions, 439 flow [2025-02-06 18:31:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:31:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:31:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 262 transitions. [2025-02-06 18:31:54,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6469135802469136 [2025-02-06 18:31:54,220 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 157 flow. Second operand 5 states and 262 transitions. [2025-02-06 18:31:54,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 118 transitions, 439 flow [2025-02-06 18:31:54,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:31:54,230 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 196 flow [2025-02-06 18:31:54,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2025-02-06 18:31:54,234 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2025-02-06 18:31:54,234 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 196 flow [2025-02-06 18:31:54,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2025-02-06 18:31:54,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:54,235 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:54,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:31:54,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-06 18:31:54,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:54,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1655985955, now seen corresponding path program 1 times [2025-02-06 18:31:54,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:54,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990389873] [2025-02-06 18:31:54,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:54,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:54,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:31:54,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:31:54,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:54,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:54,257 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:31:54,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:31:54,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:31:54,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:54,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:54,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:31:54,275 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:31:54,276 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2025-02-06 18:31:54,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2025-02-06 18:31:54,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2025-02-06 18:31:54,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2025-02-06 18:31:54,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:31:54,280 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 18:31:54,280 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:31:54,280 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 18:31:54,322 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:31:54,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 118 transitions, 272 flow [2025-02-06 18:31:54,333 INFO L124 PetriNetUnfolderBase]: 4/109 cut-off events. [2025-02-06 18:31:54,333 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 18:31:54,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 109 events. 4/109 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 322 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2025-02-06 18:31:54,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 118 transitions, 272 flow [2025-02-06 18:31:54,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 101 transitions, 223 flow [2025-02-06 18:31:54,338 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:54,338 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;@2c6b7445, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:54,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2025-02-06 18:31:54,341 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:54,342 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2025-02-06 18:31:54,342 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 18:31:54,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:54,342 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:54,342 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2025-02-06 18:31:54,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash -953428142, now seen corresponding path program 1 times [2025-02-06 18:31:54,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:54,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693379999] [2025-02-06 18:31:54,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:54,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:54,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:31:54,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:31:54,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:54,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:54,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:54,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693379999] [2025-02-06 18:31:54,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693379999] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:54,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:54,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:54,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369515713] [2025-02-06 18:31:54,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:54,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:31:54,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:54,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:31:54,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:31:54,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 118 [2025-02-06 18:31:54,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:54,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:54,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 118 [2025-02-06 18:31:54,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:32:07,919 INFO L124 PetriNetUnfolderBase]: 193529/301752 cut-off events. [2025-02-06 18:32:07,920 INFO L125 PetriNetUnfolderBase]: For 7138/7138 co-relation queries the response was YES. [2025-02-06 18:32:08,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553845 conditions, 301752 events. 193529/301752 cut-off events. For 7138/7138 co-relation queries the response was YES. Maximal size of possible extension queue 7244. Compared 2771491 event pairs, 47152 based on Foata normal form. 30132/302676 useless extension candidates. Maximal degree in co-relation 553833. Up to 218309 conditions per place. [2025-02-06 18:32:09,845 INFO L140 encePairwiseOnDemand]: 109/118 looper letters, 136 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2025-02-06 18:32:09,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 185 transitions, 710 flow [2025-02-06 18:32:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:32:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:32:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2025-02-06 18:32:09,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6711864406779661 [2025-02-06 18:32:09,850 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 223 flow. Second operand 5 states and 396 transitions. [2025-02-06 18:32:09,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 185 transitions, 710 flow [2025-02-06 18:32:09,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 185 transitions, 701 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-06 18:32:09,861 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 277 flow [2025-02-06 18:32:09,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=277, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2025-02-06 18:32:09,862 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, 4 predicate places. [2025-02-06 18:32:09,862 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 277 flow [2025-02-06 18:32:09,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:32:09,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:32:09,862 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:32:09,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:32:09,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2025-02-06 18:32:09,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:32:09,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1416397709, now seen corresponding path program 1 times [2025-02-06 18:32:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:32:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126586139] [2025-02-06 18:32:09,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:32:09,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:32:09,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:32:09,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:32:09,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:32:09,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:32:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:32:09,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:32:09,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126586139] [2025-02-06 18:32:09,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126586139] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:32:09,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:32:09,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:32:09,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263084963] [2025-02-06 18:32:09,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:32:09,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:32:09,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:32:09,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:32:09,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:32:09,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 118 [2025-02-06 18:32:09,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2025-02-06 18:32:09,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:32:09,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 118 [2025-02-06 18:32:09,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand