./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 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-bad-buffer-mult-alt2.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 a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:27:24,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:27:24,464 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:27:24,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:27:24,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:27:24,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:27:24,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:27:24,490 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:27:24,490 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:27:24,490 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:27:24,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:27:24,491 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:27:24,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:27:24,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:27:24,491 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:27:24,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:27:24,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:27:24,491 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:27:24,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:27:24,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:27:24,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:27:24,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:27:24,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:27:24,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:27:24,493 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:27:24,493 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:27:24,493 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:27:24,493 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:27:24,494 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:27:24,494 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:27:24,494 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:27:24,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:27:24,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:27:24,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:27:24,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:27:24,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:27:24,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:27:24,494 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:27:24,494 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:27:24,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:27:24,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:27:24,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:27:24,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:27:24,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:27:24,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:27:24,495 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 -> a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 [2025-03-04 15:27:24,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:27:24,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:27:24,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:27:24,732 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:27:24,732 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:27:24,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2025-03-04 15:27:25,828 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5bf98e91/a7588c00fa5045c2b10965fd5b803888/FLAGa89e582cd [2025-03-04 15:27:26,002 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:27:26,004 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2025-03-04 15:27:26,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5bf98e91/a7588c00fa5045c2b10965fd5b803888/FLAGa89e582cd [2025-03-04 15:27:26,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5bf98e91/a7588c00fa5045c2b10965fd5b803888 [2025-03-04 15:27:26,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:27:26,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:27:26,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:27:26,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:27:26,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:27:26,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4448f301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26, skipping insertion in model container [2025-03-04 15:27:26,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,059 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:27:26,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:27:26,200 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:27:26,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:27:26,255 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:27:26,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26 WrapperNode [2025-03-04 15:27:26,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:27:26,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:27:26,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:27:26,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:27:26,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,304 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 337 [2025-03-04 15:27:26,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:27:26,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:27:26,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:27:26,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:27:26,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,337 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]. [2025-03-04 15:27:26,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,342 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:27:26,352 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:27:26,352 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:27:26,352 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:27:26,353 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (1/1) ... [2025-03-04 15:27:26,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:27:26,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:26,377 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) [2025-03-04 15:27:26,379 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 [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:27:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:27:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 15:27:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-04 15:27:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:27:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:27:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:27:26,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:27:26,397 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:27:26,486 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:27:26,487 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:27:26,926 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:27:26,926 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:27:27,340 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:27:27,341 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:27:27,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:27:27 BoogieIcfgContainer [2025-03-04 15:27:27,342 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:27:27,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:27:27,344 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:27:27,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:27:27,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:27:26" (1/3) ... [2025-03-04 15:27:27,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3daba858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:27:27, skipping insertion in model container [2025-03-04 15:27:27,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:26" (2/3) ... [2025-03-04 15:27:27,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3daba858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:27:27, skipping insertion in model container [2025-03-04 15:27:27,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:27:27" (3/3) ... [2025-03-04 15:27:27,351 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2025-03-04 15:27:27,363 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:27:27,364 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt2.wvr.c that has 5 procedures, 75 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-03-04 15:27:27,365 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:27:27,485 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-04 15:27:27,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 188 flow [2025-03-04 15:27:27,552 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2025-03-04 15:27:27,554 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 15:27:27,557 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 238 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. [2025-03-04 15:27:27,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 80 transitions, 188 flow [2025-03-04 15:27:27,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 74 transitions, 169 flow [2025-03-04 15:27:27,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:27:27,577 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;@7b964170, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:27:27,577 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2025-03-04 15:27:27,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:27:27,580 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-04 15:27:27,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:27:27,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:27,581 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 15:27:27,581 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-04 15:27:27,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash 972724, now seen corresponding path program 1 times [2025-03-04 15:27:27,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:27,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113672811] [2025-03-04 15:27:27,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:27,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:27,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 15:27:27,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 15:27:27,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:27,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:27,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:27,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113672811] [2025-03-04 15:27:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113672811] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:27,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:27:27,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148424155] [2025-03-04 15:27:27,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:27,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:27,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:27,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:27,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:27:27,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 80 [2025-03-04 15:27:27,871 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) [2025-03-04 15:27:27,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:27,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 80 [2025-03-04 15:27:27,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:33,090 INFO L124 PetriNetUnfolderBase]: 41752/55202 cut-off events. [2025-03-04 15:27:33,090 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2025-03-04 15:27:33,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111367 conditions, 55202 events. 41752/55202 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 3802. Compared 366803 event pairs, 36178 based on Foata normal form. 2/29423 useless extension candidates. Maximal degree in co-relation 104146. Up to 54060 conditions per place. [2025-03-04 15:27:33,463 INFO L140 encePairwiseOnDemand]: 61/80 looper letters, 55 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2025-03-04 15:27:33,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 289 flow [2025-03-04 15:27:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:27:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:27:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2025-03-04 15:27:33,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40625 [2025-03-04 15:27:33,477 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 169 flow. Second operand 4 states and 130 transitions. [2025-03-04 15:27:33,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 289 flow [2025-03-04 15:27:33,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-04 15:27:33,592 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 200 flow [2025-03-04 15:27:33,594 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} [2025-03-04 15:27:33,597 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2025-03-04 15:27:33,598 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 200 flow [2025-03-04 15:27:33,599 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) [2025-03-04 15:27:33,599 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:33,599 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 15:27:33,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:27:33,599 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-04 15:27:33,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1085414182, now seen corresponding path program 1 times [2025-03-04 15:27:33,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:33,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420576568] [2025-03-04 15:27:33,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:33,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:33,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:27:33,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:27:33,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:33,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:33,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:33,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420576568] [2025-03-04 15:27:33,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420576568] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:33,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323781388] [2025-03-04 15:27:33,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:33,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:33,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:33,743 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) [2025-03-04 15:27:33,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:27:33,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:27:33,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:27:33,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:33,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:33,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:33,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:33,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:27:33,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323781388] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:33,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:27:33,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-04 15:27:33,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582901109] [2025-03-04 15:27:33,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:33,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:27:33,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:33,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:27:33,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:27:33,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 80 [2025-03-04 15:27:33,911 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) [2025-03-04 15:27:33,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:33,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 80 [2025-03-04 15:27:33,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:38,018 INFO L124 PetriNetUnfolderBase]: 41752/55200 cut-off events. [2025-03-04 15:27:38,019 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2025-03-04 15:27:38,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110494 conditions, 55200 events. 41752/55200 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 3802. Compared 367292 event pairs, 36178 based on Foata normal form. 2/29424 useless extension candidates. Maximal degree in co-relation 110444. Up to 54050 conditions per place. [2025-03-04 15:27:38,434 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 48 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2025-03-04 15:27:38,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 312 flow [2025-03-04 15:27:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:27:38,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:27:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2025-03-04 15:27:38,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30416666666666664 [2025-03-04 15:27:38,436 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 200 flow. Second operand 6 states and 146 transitions. [2025-03-04 15:27:38,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 312 flow [2025-03-04 15:27:38,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:27:38,437 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 216 flow [2025-03-04 15:27:38,438 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} [2025-03-04 15:27:38,438 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2025-03-04 15:27:38,438 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 216 flow [2025-03-04 15:27:38,438 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) [2025-03-04 15:27:38,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:38,439 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-04 15:27:38,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:38,642 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 [2025-03-04 15:27:38,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-04 15:27:38,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:38,643 INFO L85 PathProgramCache]: Analyzing trace with hash 711899668, now seen corresponding path program 1 times [2025-03-04 15:27:38,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:38,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912618994] [2025-03-04 15:27:38,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:38,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:38,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:27:38,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:27:38,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:38,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:38,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:38,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912618994] [2025-03-04 15:27:38,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912618994] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:38,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076514981] [2025-03-04 15:27:38,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:38,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:38,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:38,742 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) [2025-03-04 15:27:38,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:27:38,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:27:38,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:27:38,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:38,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:38,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:38,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:38,846 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:38,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076514981] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:38,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:38,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-04 15:27:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400878363] [2025-03-04 15:27:38,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:38,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:27:38,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:38,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:27:38,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:27:38,902 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 80 [2025-03-04 15:27:38,903 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) [2025-03-04 15:27:38,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:38,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 80 [2025-03-04 15:27:38,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:43,690 INFO L124 PetriNetUnfolderBase]: 41758/55224 cut-off events. [2025-03-04 15:27:43,690 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2025-03-04 15:27:43,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110588 conditions, 55224 events. 41758/55224 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 3802. Compared 367476 event pairs, 36178 based on Foata normal form. 6/29451 useless extension candidates. Maximal degree in co-relation 110446. Up to 54061 conditions per place. [2025-03-04 15:27:44,066 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 53 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2025-03-04 15:27:44,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 486 flow [2025-03-04 15:27:44,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:27:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:27:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2025-03-04 15:27:44,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28 [2025-03-04 15:27:44,068 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 216 flow. Second operand 10 states and 224 transitions. [2025-03-04 15:27:44,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 486 flow [2025-03-04 15:27:44,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-04 15:27:44,071 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 356 flow [2025-03-04 15:27:44,071 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} [2025-03-04 15:27:44,071 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2025-03-04 15:27:44,071 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 356 flow [2025-03-04 15:27:44,072 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) [2025-03-04 15:27:44,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:44,072 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:44,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 15:27:44,272 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 [2025-03-04 15:27:44,272 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-04 15:27:44,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:44,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1963883913, now seen corresponding path program 1 times [2025-03-04 15:27:44,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:44,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586046916] [2025-03-04 15:27:44,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:44,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:44,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:27:44,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:27:44,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:44,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:44,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:44,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586046916] [2025-03-04 15:27:44,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586046916] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:44,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:44,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:27:44,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354634405] [2025-03-04 15:27:44,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:44,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:44,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:44,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:44,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:27:44,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 80 [2025-03-04 15:27:44,481 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) [2025-03-04 15:27:44,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:44,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 80 [2025-03-04 15:27:44,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:49,743 INFO L124 PetriNetUnfolderBase]: 47068/62672 cut-off events. [2025-03-04 15:27:49,743 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2025-03-04 15:27:49,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125557 conditions, 62672 events. 47068/62672 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 3884. Compared 416093 event pairs, 41078 based on Foata normal form. 1162/37066 useless extension candidates. Maximal degree in co-relation 125461. Up to 54076 conditions per place. [2025-03-04 15:27:50,077 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 121 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2025-03-04 15:27:50,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 136 transitions, 781 flow [2025-03-04 15:27:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:27:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:27:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2025-03-04 15:27:50,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.540625 [2025-03-04 15:27:50,079 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 356 flow. Second operand 4 states and 173 transitions. [2025-03-04 15:27:50,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 136 transitions, 781 flow [2025-03-04 15:27:50,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 136 transitions, 747 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-04 15:27:50,082 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 359 flow [2025-03-04 15:27:50,082 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=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=359, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2025-03-04 15:27:50,083 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2025-03-04 15:27:50,083 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 359 flow [2025-03-04 15:27:50,083 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) [2025-03-04 15:27:50,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:50,083 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:50,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:27:50,083 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-04 15:27:50,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:50,084 INFO L85 PathProgramCache]: Analyzing trace with hash 846228894, now seen corresponding path program 1 times [2025-03-04 15:27:50,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:50,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984974326] [2025-03-04 15:27:50,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:50,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:50,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:27:50,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:27:50,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:50,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:50,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:50,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984974326] [2025-03-04 15:27:50,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984974326] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:50,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:50,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:27:50,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273274367] [2025-03-04 15:27:50,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:50,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:27:50,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:50,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:27:50,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:27:50,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 80 [2025-03-04 15:27:50,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 359 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) [2025-03-04 15:27:50,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:50,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 80 [2025-03-04 15:27:50,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand