./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:12:58,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:12:58,593 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:12:58,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:12:58,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:12:58,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:12:58,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:12:58,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:12:58,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:12:58,632 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:12:58,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:12:58,632 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:12:58,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:12:58,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:12:58,635 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:12:58,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:12:58,636 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:12:58,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:12:58,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:12:58,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:12:58,637 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:12:58,637 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:12:58,638 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:12:58,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:12:58,638 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:12:58,639 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:12:58,639 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:12:58,639 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:12:58,640 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:12:58,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:12:58,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:12:58,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:12:58,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:12:58,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:12:58,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:12:58,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:12:58,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:12:58,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:12:58,642 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:12:58,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:12:58,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:12:58,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:12:58,643 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2024-10-24 19:12:58,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:12:58,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:12:58,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:12:58,928 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:12:58,928 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:12:58,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-10-24 19:13:00,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:13:00,745 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:13:00,746 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-10-24 19:13:00,767 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ae4571e/c15889b2a75b44bda4a765c5cc28f012/FLAGe92e642be [2024-10-24 19:13:00,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ae4571e/c15889b2a75b44bda4a765c5cc28f012 [2024-10-24 19:13:00,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:13:00,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:13:00,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:13:00,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:13:00,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:13:00,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dbcc5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00, skipping insertion in model container [2024-10-24 19:13:00,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,854 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:13:01,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:13:01,240 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:13:01,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:13:01,339 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:13:01,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01 WrapperNode [2024-10-24 19:13:01,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:13:01,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:13:01,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:13:01,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:13:01,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,393 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 145 [2024-10-24 19:13:01,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:13:01,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:13:01,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:13:01,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:13:01,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,410 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,434 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-10-24 19:13:01,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:13:01,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:13:01,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:13:01,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:13:01,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (1/1) ... [2024-10-24 19:13:01,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:13:01,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:13:01,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:13:01,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:13:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-10-24 19:13:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-10-24 19:13:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 19:13:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:13:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-10-24 19:13:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-10-24 19:13:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 19:13:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 19:13:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 19:13:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 19:13:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 19:13:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 19:13:01,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:13:01,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:13:01,551 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:13:01,722 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:13:01,724 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:13:02,087 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:13:02,088 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:13:02,270 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:13:02,270 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 19:13:02,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:13:02 BoogieIcfgContainer [2024-10-24 19:13:02,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:13:02,274 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:13:02,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:13:02,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:13:02,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:13:00" (1/3) ... [2024-10-24 19:13:02,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a58179d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:13:02, skipping insertion in model container [2024-10-24 19:13:02,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:01" (2/3) ... [2024-10-24 19:13:02,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a58179d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:13:02, skipping insertion in model container [2024-10-24 19:13:02,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:13:02" (3/3) ... [2024-10-24 19:13:02,282 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-10-24 19:13:02,299 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:13:02,300 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-24 19:13:02,300 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:13:02,364 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 19:13:02,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 176 flow [2024-10-24 19:13:02,471 INFO L124 PetriNetUnfolderBase]: 9/79 cut-off events. [2024-10-24 19:13:02,471 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:13:02,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 9/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 194 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2024-10-24 19:13:02,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 176 flow [2024-10-24 19:13:02,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 79 transitions, 167 flow [2024-10-24 19:13:02,529 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:13:02,544 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=None, 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;@3daa3798, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:13:02,545 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-24 19:13:02,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:13:02,567 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2024-10-24 19:13:02,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:13:02,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:02,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:02,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-10-24 19:13:02,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:02,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1880598954, now seen corresponding path program 1 times [2024-10-24 19:13:02,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:02,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106620254] [2024-10-24 19:13:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:02,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:03,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:03,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106620254] [2024-10-24 19:13:03,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106620254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:03,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:03,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:13:03,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078043599] [2024-10-24 19:13:03,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:03,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:13:03,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:13:03,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:13:03,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 82 [2024-10-24 19:13:03,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:13:03,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:03,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 82 [2024-10-24 19:13:03,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:09,238 INFO L124 PetriNetUnfolderBase]: 43763/66795 cut-off events. [2024-10-24 19:13:09,239 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-10-24 19:13:09,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127894 conditions, 66795 events. 43763/66795 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1642. Compared 519114 event pairs, 10183 based on Foata normal form. 9296/75411 useless extension candidates. Maximal degree in co-relation 127883. Up to 16083 conditions per place. [2024-10-24 19:13:09,689 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 218 selfloop transitions, 11 changer transitions 0/250 dead transitions. [2024-10-24 19:13:09,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 250 transitions, 988 flow [2024-10-24 19:13:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:13:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:13:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2024-10-24 19:13:09,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711890243902439 [2024-10-24 19:13:09,711 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 167 flow. Second operand 8 states and 467 transitions. [2024-10-24 19:13:09,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 250 transitions, 988 flow [2024-10-24 19:13:09,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 250 transitions, 978 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:13:09,724 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 201 flow [2024-10-24 19:13:09,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=201, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-10-24 19:13:09,731 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2024-10-24 19:13:09,732 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 201 flow [2024-10-24 19:13:09,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:13:09,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:09,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:09,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 19:13:09,733 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-10-24 19:13:09,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:09,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1634123195, now seen corresponding path program 1 times [2024-10-24 19:13:09,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:09,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19509498] [2024-10-24 19:13:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:09,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:09,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:09,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19509498] [2024-10-24 19:13:09,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19509498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:09,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:09,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:13:09,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546243574] [2024-10-24 19:13:09,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:09,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:13:09,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:09,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:13:09,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:13:09,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 82 [2024-10-24 19:13:09,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:13:09,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:09,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 82 [2024-10-24 19:13:09,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:16,345 INFO L124 PetriNetUnfolderBase]: 58899/92217 cut-off events. [2024-10-24 19:13:16,346 INFO L125 PetriNetUnfolderBase]: For 17605/17605 co-relation queries the response was YES. [2024-10-24 19:13:16,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194647 conditions, 92217 events. 58899/92217 cut-off events. For 17605/17605 co-relation queries the response was YES. Maximal size of possible extension queue 2503. Compared 771975 event pairs, 12885 based on Foata normal form. 0/90733 useless extension candidates. Maximal degree in co-relation 194633. Up to 35145 conditions per place. [2024-10-24 19:13:17,005 INFO L140 encePairwiseOnDemand]: 70/82 looper letters, 205 selfloop transitions, 19 changer transitions 0/245 dead transitions. [2024-10-24 19:13:17,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 245 transitions, 1128 flow [2024-10-24 19:13:17,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:13:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:13:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 384 transitions. [2024-10-24 19:13:17,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-10-24 19:13:17,010 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 201 flow. Second operand 8 states and 384 transitions. [2024-10-24 19:13:17,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 245 transitions, 1128 flow [2024-10-24 19:13:18,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 245 transitions, 1128 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:13:18,075 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 310 flow [2024-10-24 19:13:18,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=310, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2024-10-24 19:13:18,076 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 15 predicate places. [2024-10-24 19:13:18,076 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 310 flow [2024-10-24 19:13:18,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:13:18,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:18,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:18,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 19:13:18,077 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-10-24 19:13:18,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2104850499, now seen corresponding path program 1 times [2024-10-24 19:13:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:18,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979090518] [2024-10-24 19:13:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:18,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:18,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979090518] [2024-10-24 19:13:18,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979090518] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:18,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:18,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:13:18,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98044472] [2024-10-24 19:13:18,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:18,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:13:18,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:18,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:13:18,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:13:18,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 82 [2024-10-24 19:13:18,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:13:18,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:18,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 82 [2024-10-24 19:13:18,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:27,065 INFO L124 PetriNetUnfolderBase]: 76220/124239 cut-off events. [2024-10-24 19:13:27,065 INFO L125 PetriNetUnfolderBase]: For 50931/50931 co-relation queries the response was YES. [2024-10-24 19:13:27,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285901 conditions, 124239 events. 76220/124239 cut-off events. For 50931/50931 co-relation queries the response was YES. Maximal size of possible extension queue 3684. Compared 1145378 event pairs, 28525 based on Foata normal form. 0/122559 useless extension candidates. Maximal degree in co-relation 285881. Up to 54199 conditions per place. [2024-10-24 19:13:27,819 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 241 selfloop transitions, 17 changer transitions 0/282 dead transitions. [2024-10-24 19:13:27,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 282 transitions, 1516 flow [2024-10-24 19:13:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:13:27,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:13:27,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 398 transitions. [2024-10-24 19:13:27,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6067073170731707 [2024-10-24 19:13:27,821 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 310 flow. Second operand 8 states and 398 transitions. [2024-10-24 19:13:27,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 282 transitions, 1516 flow [2024-10-24 19:13:31,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 282 transitions, 1516 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:13:31,113 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 419 flow [2024-10-24 19:13:31,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=419, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2024-10-24 19:13:31,114 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 26 predicate places. [2024-10-24 19:13:31,114 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 419 flow [2024-10-24 19:13:31,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:13:31,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:31,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:31,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 19:13:31,115 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-10-24 19:13:31,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2120303021, now seen corresponding path program 1 times [2024-10-24 19:13:31,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:31,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392184672] [2024-10-24 19:13:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:31,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:31,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:31,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392184672] [2024-10-24 19:13:31,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392184672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:31,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:31,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:13:31,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225668541] [2024-10-24 19:13:31,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:31,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:13:31,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:31,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:13:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:13:31,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 82 [2024-10-24 19:13:31,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:13:31,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:31,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 82 [2024-10-24 19:13:31,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:38,398 INFO L124 PetriNetUnfolderBase]: 56779/95146 cut-off events. [2024-10-24 19:13:38,398 INFO L125 PetriNetUnfolderBase]: For 60051/60051 co-relation queries the response was YES. [2024-10-24 19:13:38,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241973 conditions, 95146 events. 56779/95146 cut-off events. For 60051/60051 co-relation queries the response was YES. Maximal size of possible extension queue 3467. Compared 907642 event pairs, 20960 based on Foata normal form. 3727/98728 useless extension candidates. Maximal degree in co-relation 241947. Up to 51317 conditions per place. [2024-10-24 19:13:39,098 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 132 selfloop transitions, 13 changer transitions 0/171 dead transitions. [2024-10-24 19:13:39,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 171 transitions, 1028 flow [2024-10-24 19:13:39,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:13:39,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:13:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-10-24 19:13:39,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6626016260162602 [2024-10-24 19:13:39,099 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 419 flow. Second operand 3 states and 163 transitions. [2024-10-24 19:13:39,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 171 transitions, 1028 flow [2024-10-24 19:13:42,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 171 transitions, 1028 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:13:42,752 INFO L231 Difference]: Finished difference. Result has 109 places, 110 transitions, 490 flow [2024-10-24 19:13:42,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=109, PETRI_TRANSITIONS=110} [2024-10-24 19:13:42,753 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 29 predicate places. [2024-10-24 19:13:42,753 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 110 transitions, 490 flow [2024-10-24 19:13:42,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:13:42,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:42,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:42,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 19:13:42,754 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-10-24 19:13:42,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:42,754 INFO L85 PathProgramCache]: Analyzing trace with hash 875421250, now seen corresponding path program 1 times [2024-10-24 19:13:42,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:42,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110548446] [2024-10-24 19:13:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:42,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:42,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110548446] [2024-10-24 19:13:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110548446] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:42,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:42,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:13:42,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741089603] [2024-10-24 19:13:42,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:42,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:13:42,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:13:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:13:42,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 82 [2024-10-24 19:13:42,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 110 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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) [2024-10-24 19:13:42,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:42,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 82 [2024-10-24 19:13:42,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:50,572 INFO L124 PetriNetUnfolderBase]: 56779/97243 cut-off events. [2024-10-24 19:13:50,572 INFO L125 PetriNetUnfolderBase]: For 81352/82009 co-relation queries the response was YES. [2024-10-24 19:13:50,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280196 conditions, 97243 events. 56779/97243 cut-off events. For 81352/82009 co-relation queries the response was YES. Maximal size of possible extension queue 3632. Compared 950197 event pairs, 37972 based on Foata normal form. 3047/100103 useless extension candidates. Maximal degree in co-relation 280168. Up to 81884 conditions per place. [2024-10-24 19:13:51,257 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 83 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2024-10-24 19:13:51,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 109 transitions, 656 flow [2024-10-24 19:13:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:13:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:13:51,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-10-24 19:13:51,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-10-24 19:13:51,258 INFO L175 Difference]: Start difference. First operand has 109 places, 110 transitions, 490 flow. Second operand 3 states and 118 transitions. [2024-10-24 19:13:51,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 109 transitions, 656 flow [2024-10-24 19:13:54,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 109 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:13:54,405 INFO L231 Difference]: Finished difference. Result has 109 places, 109 transitions, 477 flow [2024-10-24 19:13:54,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=109, PETRI_TRANSITIONS=109} [2024-10-24 19:13:54,406 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 29 predicate places. [2024-10-24 19:13:54,406 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 109 transitions, 477 flow [2024-10-24 19:13:54,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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) [2024-10-24 19:13:54,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:54,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:54,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 19:13:54,406 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-10-24 19:13:54,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:54,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1010036993, now seen corresponding path program 1 times [2024-10-24 19:13:54,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:54,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513777273] [2024-10-24 19:13:54,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:54,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:54,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:54,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513777273] [2024-10-24 19:13:54,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513777273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:54,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:54,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:13:54,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386984483] [2024-10-24 19:13:54,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:54,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:13:54,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:54,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:13:54,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:13:54,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 82 [2024-10-24 19:13:54,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 109 transitions, 477 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:13:54,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:54,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 82 [2024-10-24 19:13:54,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand