./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/weaver/popl20-more-buffer-mult2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:45:24,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:45:24,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:45:24,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:45:24,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:45:24,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:45:24,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:45:24,255 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:45:24,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:45:24,256 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:45:24,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:45:24,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:45:24,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:45:24,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:45:24,257 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:45:24,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:45:24,258 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:45:24,259 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:45:24,259 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:45:24,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:45:24,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:45:24,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:45:24,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:45:24,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:45:24,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:45:24,260 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:45:24,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:45:24,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:45:24,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:45:24,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:45:24,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:45:24,260 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:45:24,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:45:24,261 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/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 -> dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 [2025-03-17 19:45:24,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:45:24,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:45:24,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:45:24,593 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:45:24,594 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:45:24,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2025-03-17 19:45:25,759 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e442064/562ca45eec034a23b7a8c9e8aac93542/FLAG688b95eb0 [2025-03-17 19:45:26,012 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:45:26,013 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2025-03-17 19:45:26,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e442064/562ca45eec034a23b7a8c9e8aac93542/FLAG688b95eb0 [2025-03-17 19:45:26,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e442064/562ca45eec034a23b7a8c9e8aac93542 [2025-03-17 19:45:26,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:45:26,041 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:45:26,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:45:26,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:45:26,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:45:26,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f99718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26, skipping insertion in model container [2025-03-17 19:45:26,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,064 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:45:26,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:45:26,231 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:45:26,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:45:26,267 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:45:26,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26 WrapperNode [2025-03-17 19:45:26,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:45:26,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:45:26,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:45:26,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:45:26,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,305 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 322 [2025-03-17 19:45:26,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:45:26,306 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:45:26,306 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:45:26,306 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:45:26,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,319 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,335 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-17 19:45:26,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,347 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,353 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:45:26,356 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:45:26,356 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:45:26,356 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:45:26,357 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (1/1) ... [2025-03-17 19:45:26,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:45:26,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:26,383 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) [2025-03-17 19:45:26,385 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 [2025-03-17 19:45:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:45:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:45:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:45:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:45:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:45:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:45:26,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:45:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:45:26,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:45:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:45:26,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:45:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-17 19:45:26,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-17 19:45:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:45:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:45:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:45:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:45:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:45:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:45:26,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:45:26,417 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:45:26,507 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:45:26,508 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:45:26,881 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:45:26,882 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:45:27,194 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:45:27,194 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:45:27,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:45:27 BoogieIcfgContainer [2025-03-17 19:45:27,195 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:45:27,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:45:27,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:45:27,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:45:27,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:45:26" (1/3) ... [2025-03-17 19:45:27,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f2c74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:45:27, skipping insertion in model container [2025-03-17 19:45:27,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:26" (2/3) ... [2025-03-17 19:45:27,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f2c74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:45:27, skipping insertion in model container [2025-03-17 19:45:27,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:45:27" (3/3) ... [2025-03-17 19:45:27,202 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2025-03-17 19:45:27,215 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:45:27,216 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult2.wvr.c that has 5 procedures, 75 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-03-17 19:45:27,216 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:45:27,349 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-17 19:45:27,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 188 flow [2025-03-17 19:45:27,415 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2025-03-17 19:45:27,417 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 19:45:27,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 76 events. 6/76 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 234 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2025-03-17 19:45:27,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 80 transitions, 188 flow [2025-03-17 19:45:27,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 74 transitions, 169 flow [2025-03-17 19:45:27,432 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:45:27,444 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;@a7793c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:45:27,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2025-03-17 19:45:27,447 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:45:27,447 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:45:27,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:45:27,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:27,447 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:45:27,447 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-17 19:45:27,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash 915346, now seen corresponding path program 1 times [2025-03-17 19:45:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:27,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973030936] [2025-03-17 19:45:27,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:27,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:27,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:45:27,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:45:27,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:27,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:27,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:27,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973030936] [2025-03-17 19:45:27,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973030936] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:27,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:27,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:45:27,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113882622] [2025-03-17 19:45:27,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:27,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:45:27,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:27,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:45:27,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:45:27,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 80 [2025-03-17 19:45:27,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-17 19:45:27,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:27,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 80 [2025-03-17 19:45:27,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:32,500 INFO L124 PetriNetUnfolderBase]: 41752/55202 cut-off events. [2025-03-17 19:45:32,501 INFO L125 PetriNetUnfolderBase]: For 1108/1108 co-relation queries the response was YES. [2025-03-17 19:45:32,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111367 conditions, 55202 events. 41752/55202 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 3802. Compared 360588 event pairs, 36178 based on Foata normal form. 2/29416 useless extension candidates. Maximal degree in co-relation 104146. Up to 54060 conditions per place. [2025-03-17 19:45:32,800 INFO L140 encePairwiseOnDemand]: 61/80 looper letters, 55 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2025-03-17 19:45:32,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 289 flow [2025-03-17 19:45:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:45:32,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:45:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2025-03-17 19:45:32,813 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40625 [2025-03-17 19:45:32,817 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 169 flow. Second operand 4 states and 130 transitions. [2025-03-17 19:45:32,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 289 flow [2025-03-17 19:45:32,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-17 19:45:32,955 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 200 flow [2025-03-17 19:45:32,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2025-03-17 19:45:32,962 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2025-03-17 19:45:32,962 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 200 flow [2025-03-17 19:45:32,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-17 19:45:32,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:32,963 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:45:32,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:45:32,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-17 19:45:32,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:32,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1500077585, now seen corresponding path program 1 times [2025-03-17 19:45:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:32,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531190023] [2025-03-17 19:45:32,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:32,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:32,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:45:33,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:45:33,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:33,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:33,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:33,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531190023] [2025-03-17 19:45:33,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531190023] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:33,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91580183] [2025-03-17 19:45:33,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:33,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:33,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:33,092 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) [2025-03-17 19:45:33,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:45:33,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:45:33,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:45:33,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:33,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:33,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:45:33,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:33,227 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:45:33,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91580183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:33,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:45:33,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:45:33,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112403962] [2025-03-17 19:45:33,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:33,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:45:33,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:33,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:45:33,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:45:33,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 80 [2025-03-17 19:45:33,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-03-17 19:45:33,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:33,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 80 [2025-03-17 19:45:33,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:37,609 INFO L124 PetriNetUnfolderBase]: 41752/55200 cut-off events. [2025-03-17 19:45:37,609 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2025-03-17 19:45:37,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110494 conditions, 55200 events. 41752/55200 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 3802. Compared 360622 event pairs, 36178 based on Foata normal form. 2/29417 useless extension candidates. Maximal degree in co-relation 110444. Up to 54050 conditions per place. [2025-03-17 19:45:37,862 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 48 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2025-03-17 19:45:37,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 312 flow [2025-03-17 19:45:37,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:45:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:45:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2025-03-17 19:45:37,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30416666666666664 [2025-03-17 19:45:37,864 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 200 flow. Second operand 6 states and 146 transitions. [2025-03-17 19:45:37,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 312 flow [2025-03-17 19:45:37,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:45:37,865 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 216 flow [2025-03-17 19:45:37,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2025-03-17 19:45:37,866 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2025-03-17 19:45:37,866 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 216 flow [2025-03-17 19:45:37,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-03-17 19:45:37,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:37,866 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:45:37,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:45:38,067 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 [2025-03-17 19:45:38,067 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-17 19:45:38,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash -742234310, now seen corresponding path program 1 times [2025-03-17 19:45:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:38,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935847662] [2025-03-17 19:45:38,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:38,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:38,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:45:38,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:45:38,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:38,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:38,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:38,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935847662] [2025-03-17 19:45:38,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935847662] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249110341] [2025-03-17 19:45:38,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:38,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:38,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:38,167 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) [2025-03-17 19:45:38,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:45:38,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:45:38,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:45:38,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:38,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:38,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:45:38,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:38,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:38,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249110341] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:38,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:38,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:45:38,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407402572] [2025-03-17 19:45:38,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:38,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:45:38,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:38,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:45:38,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:45:38,335 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 80 [2025-03-17 19:45:38,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2025-03-17 19:45:38,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:38,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 80 [2025-03-17 19:45:38,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:43,038 INFO L124 PetriNetUnfolderBase]: 41758/55224 cut-off events. [2025-03-17 19:45:43,039 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2025-03-17 19:45:43,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110588 conditions, 55224 events. 41758/55224 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 3802. Compared 360703 event pairs, 36178 based on Foata normal form. 6/29444 useless extension candidates. Maximal degree in co-relation 110446. Up to 54061 conditions per place. [2025-03-17 19:45:43,318 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 53 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2025-03-17 19:45:43,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 486 flow [2025-03-17 19:45:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:45:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:45:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2025-03-17 19:45:43,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28 [2025-03-17 19:45:43,321 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 216 flow. Second operand 10 states and 224 transitions. [2025-03-17 19:45:43,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 486 flow [2025-03-17 19:45:43,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-17 19:45:43,323 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 356 flow [2025-03-17 19:45:43,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2025-03-17 19:45:43,324 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2025-03-17 19:45:43,324 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 356 flow [2025-03-17 19:45:43,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2025-03-17 19:45:43,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:43,324 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:43,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:45:43,529 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 [2025-03-17 19:45:43,529 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-17 19:45:43,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash -901863926, now seen corresponding path program 1 times [2025-03-17 19:45:43,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:43,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12226609] [2025-03-17 19:45:43,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:43,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:43,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:45:43,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:45:43,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:43,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:43,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:43,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12226609] [2025-03-17 19:45:43,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12226609] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:43,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:43,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:45:43,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542540053] [2025-03-17 19:45:43,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:43,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:45:43,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:43,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:45:43,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:45:43,654 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 80 [2025-03-17 19:45:43,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2025-03-17 19:45:43,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:43,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 80 [2025-03-17 19:45:43,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:48,659 INFO L124 PetriNetUnfolderBase]: 47068/62672 cut-off events. [2025-03-17 19:45:48,660 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2025-03-17 19:45:48,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125557 conditions, 62672 events. 47068/62672 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 3884. Compared 414514 event pairs, 41078 based on Foata normal form. 1162/37063 useless extension candidates. Maximal degree in co-relation 125461. Up to 54076 conditions per place. [2025-03-17 19:45:48,973 INFO L140 encePairwiseOnDemand]: 65/80 looper letters, 119 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2025-03-17 19:45:48,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 136 transitions, 781 flow [2025-03-17 19:45:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:45:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:45:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2025-03-17 19:45:48,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.485 [2025-03-17 19:45:48,974 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 356 flow. Second operand 5 states and 194 transitions. [2025-03-17 19:45:48,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 136 transitions, 781 flow [2025-03-17 19:45:48,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 136 transitions, 747 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-17 19:45:48,977 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 383 flow [2025-03-17 19:45:48,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2025-03-17 19:45:48,978 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 5 predicate places. [2025-03-17 19:45:48,979 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 383 flow [2025-03-17 19:45:48,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2025-03-17 19:45:48,979 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:48,979 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:48,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:45:48,980 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-17 19:45:48,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash -34780450, now seen corresponding path program 1 times [2025-03-17 19:45:48,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:48,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489072158] [2025-03-17 19:45:48,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:48,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:48,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:45:48,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:45:48,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:48,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:49,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:49,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489072158] [2025-03-17 19:45:49,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489072158] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:49,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:49,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:45:49,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939753583] [2025-03-17 19:45:49,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:49,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:45:49,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:49,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:45:49,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:45:49,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 80 [2025-03-17 19:45:49,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2025-03-17 19:45:49,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:49,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 80 [2025-03-17 19:45:49,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand