./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix023_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix023_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:10:39,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:10:39,468 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:10:39,474 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:10:39,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:10:39,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:10:39,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:10:39,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:10:39,524 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:10:39,526 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:10:39,527 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:10:39,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:10:39,528 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:10:39,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:10:39,530 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:10:39,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:10:39,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:10:39,531 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:10:39,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:10:39,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:10:39,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:10:39,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:10:39,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:10:39,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:10:39,537 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:10:39,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:10:39,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:10:39,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:10:39,538 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:10:39,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:10:39,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:10:39,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:10:39,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:10:39,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:10:39,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:10:39,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:10:39,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:10:39,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:10:39,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:10:39,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:10:39,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:10:39,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:10:39,542 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 [2024-11-16 19:10:39,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:10:39,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:10:39,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:10:39,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:10:39,855 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:10:39,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix023_tso.i [2024-11-16 19:10:41,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:10:41,714 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:10:41,716 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix023_tso.i [2024-11-16 19:10:41,739 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c19860b3/fd36a979ef374c61a34615dfab0dfd3f/FLAGf08bfb0b3 [2024-11-16 19:10:41,752 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c19860b3/fd36a979ef374c61a34615dfab0dfd3f [2024-11-16 19:10:41,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:10:41,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:10:41,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:10:41,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:10:41,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:10:41,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:10:41" (1/1) ... [2024-11-16 19:10:41,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf46c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:41, skipping insertion in model container [2024-11-16 19:10:41,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:10:41" (1/1) ... [2024-11-16 19:10:41,821 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:10:42,038 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix023_tso.i[944,957] [2024-11-16 19:10:42,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:10:42,321 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:10:42,336 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix023_tso.i[944,957] [2024-11-16 19:10:42,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:10:42,490 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:10:42,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42 WrapperNode [2024-11-16 19:10:42,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:10:42,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:10:42,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:10:42,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:10:42,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,584 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 273 [2024-11-16 19:10:42,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:10:42,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:10:42,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:10:42,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:10:42,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,604 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,646 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:10:42,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,660 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,661 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:10:42,671 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:10:42,671 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:10:42,671 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:10:42,672 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (1/1) ... [2024-11-16 19:10:42,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:10:42,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:10:42,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:10:42,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:10:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:10:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:10:42,761 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:10:42,761 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:10:42,762 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:10:42,762 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:10:42,762 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-16 19:10:42,763 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-16 19:10:42,764 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-16 19:10:42,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-16 19:10:42,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:10:42,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:10:42,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:10:42,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:10:42,766 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:10:42,938 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:10:42,945 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:10:43,486 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:10:43,487 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:10:43,918 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:10:43,919 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:10:43,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:10:43 BoogieIcfgContainer [2024-11-16 19:10:43,920 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:10:43,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:10:43,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:10:43,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:10:43,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:10:41" (1/3) ... [2024-11-16 19:10:43,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592292d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:10:43, skipping insertion in model container [2024-11-16 19:10:43,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:10:42" (2/3) ... [2024-11-16 19:10:43,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592292d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:10:43, skipping insertion in model container [2024-11-16 19:10:43,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:10:43" (3/3) ... [2024-11-16 19:10:43,932 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_tso.i [2024-11-16 19:10:43,952 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:10:43,953 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-16 19:10:43,953 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:10:44,037 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:10:44,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 51 transitions, 118 flow [2024-11-16 19:10:44,124 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-11-16 19:10:44,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:10:44,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-11-16 19:10:44,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 51 transitions, 118 flow [2024-11-16 19:10:44,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 47 transitions, 106 flow [2024-11-16 19:10:44,149 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:10:44,159 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;@4898d604, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:10:44,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-16 19:10:44,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:10:44,166 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-16 19:10:44,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:10:44,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:10:44,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-16 19:10:44,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:10:44,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:10:44,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2057624565, now seen corresponding path program 1 times [2024-11-16 19:10:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:10:44,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38347908] [2024-11-16 19:10:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:10:44,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:10:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:10:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:10:44,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:10:44,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38347908] [2024-11-16 19:10:44,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38347908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:10:44,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:10:44,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-16 19:10:44,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701968455] [2024-11-16 19:10:44,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:10:44,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:10:44,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:10:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:10:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:10:44,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-11-16 19:10:44,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:10:44,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:10:44,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-11-16 19:10:44,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:10:55,682 INFO L124 PetriNetUnfolderBase]: 61077/80309 cut-off events. [2024-11-16 19:10:55,683 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-11-16 19:10:55,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160739 conditions, 80309 events. 61077/80309 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 2395. Compared 494174 event pairs, 6441 based on Foata normal form. 2016/79999 useless extension candidates. Maximal degree in co-relation 160727. Up to 70693 conditions per place. [2024-11-16 19:10:56,255 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 66 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-11-16 19:10:56,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 302 flow [2024-11-16 19:10:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:10:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:10:56,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-16 19:10:56,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2024-11-16 19:10:56,271 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 106 flow. Second operand 3 states and 101 transitions. [2024-11-16 19:10:56,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 302 flow [2024-11-16 19:10:56,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 296 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:10:56,286 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 102 flow [2024-11-16 19:10:56,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-16 19:10:56,295 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2024-11-16 19:10:56,296 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 102 flow [2024-11-16 19:10:56,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:10:56,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:10:56,297 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:10:56,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:10:56,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:10:56,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:10:56,298 INFO L85 PathProgramCache]: Analyzing trace with hash 290064180, now seen corresponding path program 1 times [2024-11-16 19:10:56,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:10:56,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400408220] [2024-11-16 19:10:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:10:56,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:10:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:10:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:10:56,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:10:56,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400408220] [2024-11-16 19:10:56,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400408220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:10:56,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:10:56,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-16 19:10:56,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911801407] [2024-11-16 19:10:56,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:10:56,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:10:56,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:10:56,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:10:56,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:10:56,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-11-16 19:10:56,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:10:56,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:10:56,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-11-16 19:10:56,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:11:04,045 INFO L124 PetriNetUnfolderBase]: 53337/70365 cut-off events. [2024-11-16 19:11:04,045 INFO L125 PetriNetUnfolderBase]: For 2352/2352 co-relation queries the response was YES. [2024-11-16 19:11:04,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143137 conditions, 70365 events. 53337/70365 cut-off events. For 2352/2352 co-relation queries the response was YES. Maximal size of possible extension queue 2002. Compared 407567 event pairs, 6897 based on Foata normal form. 0/70294 useless extension candidates. Maximal degree in co-relation 143127. Up to 60049 conditions per place. [2024-11-16 19:11:04,429 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 58 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2024-11-16 19:11:04,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 274 flow [2024-11-16 19:11:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:11:04,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:11:04,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-16 19:11:04,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-11-16 19:11:04,433 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 102 flow. Second operand 3 states and 93 transitions. [2024-11-16 19:11:04,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 274 flow [2024-11-16 19:11:04,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:11:04,437 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-11-16 19:11:04,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-16 19:11:04,438 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2024-11-16 19:11:04,439 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-11-16 19:11:04,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:11:04,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:11:04,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:11:04,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:11:04,441 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:11:04,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:11:04,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2136690686, now seen corresponding path program 1 times [2024-11-16 19:11:04,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:11:04,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633083655] [2024-11-16 19:11:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:11:04,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:11:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:11:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:11:04,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:11:04,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633083655] [2024-11-16 19:11:04,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633083655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:11:04,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:11:04,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:11:04,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191527165] [2024-11-16 19:11:04,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:11:04,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:11:04,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:11:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:11:04,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:11:04,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-11-16 19:11:04,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:11:04,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:11:04,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-11-16 19:11:04,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:11:10,881 INFO L124 PetriNetUnfolderBase]: 42373/59213 cut-off events. [2024-11-16 19:11:10,882 INFO L125 PetriNetUnfolderBase]: For 1788/1788 co-relation queries the response was YES. [2024-11-16 19:11:11,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118057 conditions, 59213 events. 42373/59213 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 1827. Compared 385978 event pairs, 5331 based on Foata normal form. 1764/60930 useless extension candidates. Maximal degree in co-relation 118047. Up to 34369 conditions per place. [2024-11-16 19:11:11,214 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 78 selfloop transitions, 6 changer transitions 1/91 dead transitions. [2024-11-16 19:11:11,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 374 flow [2024-11-16 19:11:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:11:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:11:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-16 19:11:11,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6225490196078431 [2024-11-16 19:11:11,217 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 4 states and 127 transitions. [2024-11-16 19:11:11,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 374 flow [2024-11-16 19:11:11,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:11:11,231 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 136 flow [2024-11-16 19:11:11,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-11-16 19:11:11,232 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2024-11-16 19:11:11,233 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 136 flow [2024-11-16 19:11:11,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:11:11,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:11:11,234 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] [2024-11-16 19:11:11,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:11:11,234 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:11:11,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:11:11,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1413960008, now seen corresponding path program 1 times [2024-11-16 19:11:11,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:11:11,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676649755] [2024-11-16 19:11:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:11:11,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:11:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:11:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:11:11,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:11:11,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676649755] [2024-11-16 19:11:11,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676649755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:11:11,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:11:11,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:11:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925369873] [2024-11-16 19:11:11,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:11:11,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:11:11,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:11:11,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:11:11,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:11:11,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-11-16 19:11:11,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:11:11,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:11:11,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-11-16 19:11:11,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:11:15,421 INFO L124 PetriNetUnfolderBase]: 26373/37053 cut-off events. [2024-11-16 19:11:15,421 INFO L125 PetriNetUnfolderBase]: For 7004/7004 co-relation queries the response was YES. [2024-11-16 19:11:15,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82931 conditions, 37053 events. 26373/37053 cut-off events. For 7004/7004 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 225017 event pairs, 3173 based on Foata normal form. 1364/38370 useless extension candidates. Maximal degree in co-relation 82919. Up to 14929 conditions per place. [2024-11-16 19:11:15,601 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 101 selfloop transitions, 10 changer transitions 1/118 dead transitions. [2024-11-16 19:11:15,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 118 transitions, 531 flow [2024-11-16 19:11:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:11:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:11:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-11-16 19:11:15,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6431372549019608 [2024-11-16 19:11:15,604 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 136 flow. Second operand 5 states and 164 transitions. [2024-11-16 19:11:15,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 118 transitions, 531 flow [2024-11-16 19:11:15,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 118 transitions, 520 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-16 19:11:15,615 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 188 flow [2024-11-16 19:11:15,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-11-16 19:11:15,617 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-11-16 19:11:15,617 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 188 flow [2024-11-16 19:11:15,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:11:15,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:11:15,617 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, 1, 1, 1, 1, 1] [2024-11-16 19:11:15,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:11:15,618 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:11:15,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:11:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash 564449622, now seen corresponding path program 1 times [2024-11-16 19:11:15,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:11:15,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688130128] [2024-11-16 19:11:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:11:15,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:11:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:11:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:11:16,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:11:16,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688130128] [2024-11-16 19:11:16,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688130128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:11:16,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:11:16,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:11:16,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712928328] [2024-11-16 19:11:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:11:16,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:11:16,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:11:16,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:11:16,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:11:16,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-11-16 19:11:16,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:11:16,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:11:16,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-11-16 19:11:16,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:11:18,145 INFO L124 PetriNetUnfolderBase]: 15625/21713 cut-off events. [2024-11-16 19:11:18,145 INFO L125 PetriNetUnfolderBase]: For 12962/12962 co-relation queries the response was YES. [2024-11-16 19:11:18,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53165 conditions, 21713 events. 15625/21713 cut-off events. For 12962/12962 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 118101 event pairs, 2783 based on Foata normal form. 644/22310 useless extension candidates. Maximal degree in co-relation 53151. Up to 6412 conditions per place. [2024-11-16 19:11:18,255 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 122 selfloop transitions, 14 changer transitions 1/143 dead transitions. [2024-11-16 19:11:18,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 143 transitions, 694 flow [2024-11-16 19:11:18,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:11:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:11:18,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-11-16 19:11:18,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6503267973856209 [2024-11-16 19:11:18,258 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 188 flow. Second operand 6 states and 199 transitions. [2024-11-16 19:11:18,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 143 transitions, 694 flow [2024-11-16 19:11:18,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 143 transitions, 664 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-16 19:11:18,391 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 238 flow [2024-11-16 19:11:18,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-11-16 19:11:18,392 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2024-11-16 19:11:18,392 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 238 flow [2024-11-16 19:11:18,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:11:18,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:11:18,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:11:18,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:11:18,393 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:11:18,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:11:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1294392100, now seen corresponding path program 1 times [2024-11-16 19:11:18,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:11:18,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982616499] [2024-11-16 19:11:18,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:11:18,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:11:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:11:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:11:19,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:11:19,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982616499] [2024-11-16 19:11:19,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982616499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:11:19,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:11:19,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:11:19,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915291459] [2024-11-16 19:11:19,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:11:19,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:11:19,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:11:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:11:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:11:19,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-11-16 19:11:19,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:11:19,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:11:19,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-11-16 19:11:19,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand