./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:36:37,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:36:37,779 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:36:37,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:36:37,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:36:37,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:36:37,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:36:37,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:36:37,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:36:37,807 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:36:37,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:36:37,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:36:37,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:36:37,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:36:37,807 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:36:37,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:36:37,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:36:37,808 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:36:37,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:36:37,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:36:37,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:36:37,808 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:36:37,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:36:37,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:36:37,808 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:36:37,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:36:37,808 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:36:37,809 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:36:37,809 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:36:37,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:36:37,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:36:37,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:36:37,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:36:37,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:36:37,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:36:37,809 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:36:37,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:36:37,809 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:36:37,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:36:37,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:36:37,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:36:37,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:36:37,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:36:37,810 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f [2025-02-06 04:36:38,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:36:38,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:36:38,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:36:38,015 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:36:38,016 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:36:38,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2025-02-06 04:36:39,229 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a95e4f932/06b7e0c644b74924aa530bb6a4df799e/FLAG2b6029f17 [2025-02-06 04:36:39,524 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:36:39,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2025-02-06 04:36:39,532 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a95e4f932/06b7e0c644b74924aa530bb6a4df799e/FLAG2b6029f17 [2025-02-06 04:36:39,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a95e4f932/06b7e0c644b74924aa530bb6a4df799e [2025-02-06 04:36:39,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:36:39,570 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:36:39,571 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:36:39,571 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:36:39,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:36:39,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef1e408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39, skipping insertion in model container [2025-02-06 04:36:39,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,591 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:36:39,715 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2421,2434] [2025-02-06 04:36:39,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:36:39,724 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:36:39,735 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2421,2434] [2025-02-06 04:36:39,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:36:39,744 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:36:39,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39 WrapperNode [2025-02-06 04:36:39,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:36:39,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:36:39,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:36:39,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:36:39,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,763 INFO L138 Inliner]: procedures = 19, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2025-02-06 04:36:39,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:36:39,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:36:39,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:36:39,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:36:39,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,769 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,775 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]. [2025-02-06 04:36:39,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,778 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:36:39,780 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:36:39,780 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:36:39,780 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:36:39,781 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (1/1) ... [2025-02-06 04:36:39,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:36:39,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:36:39,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:36:39,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:36:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:36:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:36:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:36:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:36:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:36:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:36:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:36:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:36:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:36:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:36:39,827 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:36:39,892 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:36:39,893 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:36:40,022 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:36:40,022 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:36:40,113 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:36:40,113 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:36:40,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:36:40 BoogieIcfgContainer [2025-02-06 04:36:40,113 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:36:40,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:36:40,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:36:40,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:36:40,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:36:39" (1/3) ... [2025-02-06 04:36:40,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a20116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:36:40, skipping insertion in model container [2025-02-06 04:36:40,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:39" (2/3) ... [2025-02-06 04:36:40,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a20116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:36:40, skipping insertion in model container [2025-02-06 04:36:40,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:36:40" (3/3) ... [2025-02-06 04:36:40,119 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2025-02-06 04:36:40,129 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:36:40,130 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-3-extended.wvr.c that has 4 procedures, 37 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-06 04:36:40,130 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:36:40,187 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:36:40,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 105 flow [2025-02-06 04:36:40,254 INFO L124 PetriNetUnfolderBase]: 6/39 cut-off events. [2025-02-06 04:36:40,255 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:36:40,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 6/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2025-02-06 04:36:40,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 42 transitions, 105 flow [2025-02-06 04:36:40,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 38 transitions, 94 flow [2025-02-06 04:36:40,270 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:36:40,283 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;@20fa2097, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:36:40,284 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:36:40,295 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:36:40,295 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2025-02-06 04:36:40,296 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:36:40,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:40,296 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:40,297 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:40,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:40,302 INFO L85 PathProgramCache]: Analyzing trace with hash -403319982, now seen corresponding path program 1 times [2025-02-06 04:36:40,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:40,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434238353] [2025-02-06 04:36:40,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:40,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:40,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:36:40,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:36:40,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:40,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:40,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:40,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434238353] [2025-02-06 04:36:40,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434238353] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:40,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:40,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:36:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956818089] [2025-02-06 04:36:40,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:40,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:36:40,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:40,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:36:40,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:36:40,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-06 04:36:40,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:40,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:40,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-06 04:36:40,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:40,725 INFO L124 PetriNetUnfolderBase]: 996/1607 cut-off events. [2025-02-06 04:36:40,725 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2025-02-06 04:36:40,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2944 conditions, 1607 events. 996/1607 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8097 event pairs, 94 based on Foata normal form. 1/1444 useless extension candidates. Maximal degree in co-relation 2669. Up to 1177 conditions per place. [2025-02-06 04:36:40,737 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 32 selfloop transitions, 7 changer transitions 1/55 dead transitions. [2025-02-06 04:36:40,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 223 flow [2025-02-06 04:36:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:36:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:36:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2025-02-06 04:36:40,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.753968253968254 [2025-02-06 04:36:40,755 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 94 flow. Second operand 3 states and 95 transitions. [2025-02-06 04:36:40,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 223 flow [2025-02-06 04:36:40,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 201 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 04:36:40,760 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 129 flow [2025-02-06 04:36:40,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=39, PETRI_TRANSITIONS=44} [2025-02-06 04:36:40,764 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2025-02-06 04:36:40,764 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 129 flow [2025-02-06 04:36:40,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:40,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:40,764 INFO L206 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] [2025-02-06 04:36:40,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:36:40,765 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:40,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:40,765 INFO L85 PathProgramCache]: Analyzing trace with hash 195976686, now seen corresponding path program 1 times [2025-02-06 04:36:40,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:40,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386997213] [2025-02-06 04:36:40,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:40,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:40,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:36:40,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:36:40,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:40,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:40,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:40,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386997213] [2025-02-06 04:36:40,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386997213] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:40,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:40,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:36:40,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391576518] [2025-02-06 04:36:40,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:40,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:36:40,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:40,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:36:40,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:36:40,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-06 04:36:40,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:40,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:40,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-06 04:36:40,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:41,083 INFO L124 PetriNetUnfolderBase]: 1142/1797 cut-off events. [2025-02-06 04:36:41,083 INFO L125 PetriNetUnfolderBase]: For 545/545 co-relation queries the response was YES. [2025-02-06 04:36:41,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4023 conditions, 1797 events. 1142/1797 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9094 event pairs, 171 based on Foata normal form. 48/1665 useless extension candidates. Maximal degree in co-relation 2810. Up to 900 conditions per place. [2025-02-06 04:36:41,100 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 43 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2025-02-06 04:36:41,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 265 flow [2025-02-06 04:36:41,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:36:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:36:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-02-06 04:36:41,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2025-02-06 04:36:41,102 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 129 flow. Second operand 3 states and 94 transitions. [2025-02-06 04:36:41,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 265 flow [2025-02-06 04:36:41,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 256 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 04:36:41,104 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 132 flow [2025-02-06 04:36:41,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2025-02-06 04:36:41,104 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2025-02-06 04:36:41,105 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 132 flow [2025-02-06 04:36:41,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:41,106 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:41,106 INFO L206 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] [2025-02-06 04:36:41,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:36:41,106 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:41,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:41,107 INFO L85 PathProgramCache]: Analyzing trace with hash -445698992, now seen corresponding path program 1 times [2025-02-06 04:36:41,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:41,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128643608] [2025-02-06 04:36:41,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:41,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:41,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:36:41,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:36:41,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:41,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:41,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:41,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128643608] [2025-02-06 04:36:41,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128643608] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:41,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:41,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:36:41,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897054929] [2025-02-06 04:36:41,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:41,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:36:41,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:41,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:36:41,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:36:41,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-06 04:36:41,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:41,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:41,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-06 04:36:41,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:41,366 INFO L124 PetriNetUnfolderBase]: 1223/1996 cut-off events. [2025-02-06 04:36:41,366 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2025-02-06 04:36:41,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 1996 events. 1223/1996 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11159 event pairs, 198 based on Foata normal form. 71/1800 useless extension candidates. Maximal degree in co-relation 2690. Up to 1041 conditions per place. [2025-02-06 04:36:41,376 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 44 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2025-02-06 04:36:41,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 277 flow [2025-02-06 04:36:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:36:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:36:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-02-06 04:36:41,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2025-02-06 04:36:41,378 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 132 flow. Second operand 3 states and 93 transitions. [2025-02-06 04:36:41,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 61 transitions, 277 flow [2025-02-06 04:36:41,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:36:41,379 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 142 flow [2025-02-06 04:36:41,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2025-02-06 04:36:41,380 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2025-02-06 04:36:41,380 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 142 flow [2025-02-06 04:36:41,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:41,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:41,380 INFO L206 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] [2025-02-06 04:36:41,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:36:41,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:41,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:41,381 INFO L85 PathProgramCache]: Analyzing trace with hash -935003290, now seen corresponding path program 1 times [2025-02-06 04:36:41,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:41,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224387846] [2025-02-06 04:36:41,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:41,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:41,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:36:41,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:36:41,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:41,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:41,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:41,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224387846] [2025-02-06 04:36:41,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224387846] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:41,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:41,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:36:41,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742494360] [2025-02-06 04:36:41,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:41,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:36:41,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:41,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:36:41,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:36:41,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-06 04:36:41,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:41,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:41,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-06 04:36:41,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:41,649 INFO L124 PetriNetUnfolderBase]: 1417/2302 cut-off events. [2025-02-06 04:36:41,649 INFO L125 PetriNetUnfolderBase]: For 1130/1130 co-relation queries the response was YES. [2025-02-06 04:36:41,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5686 conditions, 2302 events. 1417/2302 cut-off events. For 1130/1130 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13103 event pairs, 321 based on Foata normal form. 64/2094 useless extension candidates. Maximal degree in co-relation 2133. Up to 1031 conditions per place. [2025-02-06 04:36:41,659 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 45 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2025-02-06 04:36:41,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 295 flow [2025-02-06 04:36:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:36:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:36:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2025-02-06 04:36:41,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2025-02-06 04:36:41,660 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 142 flow. Second operand 3 states and 92 transitions. [2025-02-06 04:36:41,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 295 flow [2025-02-06 04:36:41,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:36:41,662 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 152 flow [2025-02-06 04:36:41,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2025-02-06 04:36:41,662 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2025-02-06 04:36:41,662 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 152 flow [2025-02-06 04:36:41,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:41,662 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:41,662 INFO L206 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] [2025-02-06 04:36:41,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:36:41,663 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:41,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1789345942, now seen corresponding path program 1 times [2025-02-06 04:36:41,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:41,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704487421] [2025-02-06 04:36:41,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:41,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:41,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 04:36:41,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:36:41,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:41,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:41,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704487421] [2025-02-06 04:36:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704487421] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:41,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:41,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:36:41,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106442542] [2025-02-06 04:36:41,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:41,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:41,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:41,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:41,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:36:41,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2025-02-06 04:36:41,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:41,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:41,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2025-02-06 04:36:41,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:42,169 INFO L124 PetriNetUnfolderBase]: 2876/4261 cut-off events. [2025-02-06 04:36:42,170 INFO L125 PetriNetUnfolderBase]: For 1981/2079 co-relation queries the response was YES. [2025-02-06 04:36:42,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11071 conditions, 4261 events. 2876/4261 cut-off events. For 1981/2079 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 22683 event pairs, 492 based on Foata normal form. 64/4044 useless extension candidates. Maximal degree in co-relation 4964. Up to 1690 conditions per place. [2025-02-06 04:36:42,192 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 65 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2025-02-06 04:36:42,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 416 flow [2025-02-06 04:36:42,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-02-06 04:36:42,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2025-02-06 04:36:42,198 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 152 flow. Second operand 4 states and 124 transitions. [2025-02-06 04:36:42,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 416 flow [2025-02-06 04:36:42,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:36:42,201 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 182 flow [2025-02-06 04:36:42,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2025-02-06 04:36:42,201 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2025-02-06 04:36:42,201 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 182 flow [2025-02-06 04:36:42,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:42,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:42,202 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2025-02-06 04:36:42,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:36:42,202 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:42,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:42,204 INFO L85 PathProgramCache]: Analyzing trace with hash 506626675, now seen corresponding path program 1 times [2025-02-06 04:36:42,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:42,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538069891] [2025-02-06 04:36:42,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:42,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:42,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 04:36:42,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:36:42,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:42,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:36:42,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:42,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538069891] [2025-02-06 04:36:42,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538069891] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:42,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:42,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:36:42,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968478957] [2025-02-06 04:36:42,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:42,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:42,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:42,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:42,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:36:42,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2025-02-06 04:36:42,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:42,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:42,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2025-02-06 04:36:42,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:42,993 INFO L124 PetriNetUnfolderBase]: 4428/6351 cut-off events. [2025-02-06 04:36:42,994 INFO L125 PetriNetUnfolderBase]: For 5673/6263 co-relation queries the response was YES. [2025-02-06 04:36:43,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18130 conditions, 6351 events. 4428/6351 cut-off events. For 5673/6263 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 35974 event pairs, 1044 based on Foata normal form. 270/6185 useless extension candidates. Maximal degree in co-relation 9994. Up to 2411 conditions per place. [2025-02-06 04:36:43,032 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 68 selfloop transitions, 5 changer transitions 0/87 dead transitions. [2025-02-06 04:36:43,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 87 transitions, 492 flow [2025-02-06 04:36:43,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2025-02-06 04:36:43,034 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2025-02-06 04:36:43,034 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 182 flow. Second operand 4 states and 122 transitions. [2025-02-06 04:36:43,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 87 transitions, 492 flow [2025-02-06 04:36:43,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 87 transitions, 486 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-02-06 04:36:43,038 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 212 flow [2025-02-06 04:36:43,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2025-02-06 04:36:43,038 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2025-02-06 04:36:43,039 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 212 flow [2025-02-06 04:36:43,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:43,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:43,039 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2025-02-06 04:36:43,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:36:43,039 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:43,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:43,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1114216153, now seen corresponding path program 1 times [2025-02-06 04:36:43,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:43,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897032066] [2025-02-06 04:36:43,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:43,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:43,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-06 04:36:43,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 04:36:43,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:43,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 04:36:43,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:43,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897032066] [2025-02-06 04:36:43,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897032066] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:43,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:43,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:36:43,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826453169] [2025-02-06 04:36:43,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:43,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:43,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:43,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:43,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:36:43,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2025-02-06 04:36:43,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:43,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:43,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2025-02-06 04:36:43,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:43,898 INFO L124 PetriNetUnfolderBase]: 6271/9089 cut-off events. [2025-02-06 04:36:43,898 INFO L125 PetriNetUnfolderBase]: For 12072/13044 co-relation queries the response was YES. [2025-02-06 04:36:43,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28009 conditions, 9089 events. 6271/9089 cut-off events. For 12072/13044 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 54909 event pairs, 1732 based on Foata normal form. 571/9197 useless extension candidates. Maximal degree in co-relation 16009. Up to 3291 conditions per place. [2025-02-06 04:36:43,938 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 71 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2025-02-06 04:36:43,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 566 flow [2025-02-06 04:36:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:43,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2025-02-06 04:36:43,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2025-02-06 04:36:43,940 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 212 flow. Second operand 4 states and 120 transitions. [2025-02-06 04:36:43,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 566 flow [2025-02-06 04:36:43,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 560 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-02-06 04:36:43,945 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 242 flow [2025-02-06 04:36:43,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2025-02-06 04:36:43,946 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2025-02-06 04:36:43,947 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 242 flow [2025-02-06 04:36:43,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:43,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:43,948 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2025-02-06 04:36:43,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:36:43,948 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:43,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash 820037591, now seen corresponding path program 1 times [2025-02-06 04:36:43,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:43,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271553633] [2025-02-06 04:36:43,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:43,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:43,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-06 04:36:43,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 04:36:43,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:43,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:44,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:44,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271553633] [2025-02-06 04:36:44,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271553633] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:36:44,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949415204] [2025-02-06 04:36:44,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:44,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:44,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:36:44,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:36:44,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:36:44,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-06 04:36:44,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 04:36:44,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:44,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:44,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 04:36:44,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:36:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:44,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:36:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:44,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949415204] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:36:44,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:36:44,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2025-02-06 04:36:44,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334006531] [2025-02-06 04:36:44,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:36:44,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:36:44,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:44,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:36:44,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:36:44,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-06 04:36:44,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:44,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:44,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-06 04:36:44,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:46,020 INFO L124 PetriNetUnfolderBase]: 13709/22568 cut-off events. [2025-02-06 04:36:46,020 INFO L125 PetriNetUnfolderBase]: For 30785/32635 co-relation queries the response was YES. [2025-02-06 04:36:46,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69908 conditions, 22568 events. 13709/22568 cut-off events. For 30785/32635 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 162302 event pairs, 2553 based on Foata normal form. 878/23136 useless extension candidates. Maximal degree in co-relation 17508. Up to 8575 conditions per place. [2025-02-06 04:36:46,256 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 99 selfloop transitions, 22 changer transitions 1/140 dead transitions. [2025-02-06 04:36:46,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 140 transitions, 912 flow [2025-02-06 04:36:46,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:36:46,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:36:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2025-02-06 04:36:46,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8380952380952381 [2025-02-06 04:36:46,258 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 242 flow. Second operand 5 states and 176 transitions. [2025-02-06 04:36:46,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 140 transitions, 912 flow [2025-02-06 04:36:46,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 140 transitions, 904 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-02-06 04:36:46,267 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 383 flow [2025-02-06 04:36:46,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2025-02-06 04:36:46,268 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2025-02-06 04:36:46,269 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 383 flow [2025-02-06 04:36:46,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:46,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:46,270 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2025-02-06 04:36:46,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:36:46,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:46,474 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:46,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:46,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1301591481, now seen corresponding path program 2 times [2025-02-06 04:36:46,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:46,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954901447] [2025-02-06 04:36:46,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:36:46,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:46,485 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-02-06 04:36:46,516 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 04:36:46,516 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:36:46,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:46,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:46,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954901447] [2025-02-06 04:36:46,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954901447] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:36:46,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868949048] [2025-02-06 04:36:46,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:36:46,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:46,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:36:46,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:36:46,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:36:46,706 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-02-06 04:36:46,731 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 04:36:46,732 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:36:46,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:46,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 04:36:46,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:36:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:46,797 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:36:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868949048] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:36:46,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:36:46,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-02-06 04:36:46,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378079431] [2025-02-06 04:36:46,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:36:46,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:36:46,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:46,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:36:46,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:36:46,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-06 04:36:46,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 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) [2025-02-06 04:36:46,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:46,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-06 04:36:46,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:50,252 INFO L124 PetriNetUnfolderBase]: 25739/42349 cut-off events. [2025-02-06 04:36:50,253 INFO L125 PetriNetUnfolderBase]: For 77180/80874 co-relation queries the response was YES. [2025-02-06 04:36:50,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146067 conditions, 42349 events. 25739/42349 cut-off events. For 77180/80874 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 338887 event pairs, 3099 based on Foata normal form. 1766/43552 useless extension candidates. Maximal degree in co-relation 36563. Up to 14115 conditions per place. [2025-02-06 04:36:50,538 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 123 selfloop transitions, 46 changer transitions 1/188 dead transitions. [2025-02-06 04:36:50,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 188 transitions, 1343 flow [2025-02-06 04:36:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:36:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:36:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2025-02-06 04:36:50,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8531746031746031 [2025-02-06 04:36:50,540 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 383 flow. Second operand 6 states and 215 transitions. [2025-02-06 04:36:50,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 188 transitions, 1343 flow [2025-02-06 04:36:50,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 188 transitions, 1259 flow, removed 42 selfloop flow, removed 0 redundant places. [2025-02-06 04:36:50,567 INFO L231 Difference]: Finished difference. Result has 70 places, 95 transitions, 571 flow [2025-02-06 04:36:50,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=571, PETRI_PLACES=70, PETRI_TRANSITIONS=95} [2025-02-06 04:36:50,569 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2025-02-06 04:36:50,569 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 95 transitions, 571 flow [2025-02-06 04:36:50,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 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) [2025-02-06 04:36:50,570 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:50,570 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2025-02-06 04:36:50,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 04:36:50,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:50,775 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:50,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash 550473549, now seen corresponding path program 3 times [2025-02-06 04:36:50,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:50,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268486009] [2025-02-06 04:36:50,776 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:36:50,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:50,784 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 3 equivalence classes. [2025-02-06 04:36:50,803 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 04:36:50,803 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 04:36:50,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:50,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:50,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268486009] [2025-02-06 04:36:50,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268486009] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:36:50,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170361224] [2025-02-06 04:36:50,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:36:50,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:50,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:36:50,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:36:50,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:36:50,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 3 equivalence classes. [2025-02-06 04:36:51,009 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 04:36:51,009 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 04:36:51,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:51,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 04:36:51,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:36:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:51,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:36:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:51,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170361224] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:36:51,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:36:51,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2025-02-06 04:36:51,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041797199] [2025-02-06 04:36:51,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:36:51,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:36:51,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:51,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:36:51,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:36:51,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-06 04:36:51,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 571 flow. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:51,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:51,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-06 04:36:51,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:56,395 INFO L124 PetriNetUnfolderBase]: 41804/69041 cut-off events. [2025-02-06 04:36:56,395 INFO L125 PetriNetUnfolderBase]: For 133397/139236 co-relation queries the response was YES. [2025-02-06 04:36:56,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241106 conditions, 69041 events. 41804/69041 cut-off events. For 133397/139236 co-relation queries the response was YES. Maximal size of possible extension queue 2260. Compared 596903 event pairs, 4295 based on Foata normal form. 2872/70856 useless extension candidates. Maximal degree in co-relation 63795. Up to 20701 conditions per place. [2025-02-06 04:36:57,012 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 146 selfloop transitions, 76 changer transitions 1/241 dead transitions. [2025-02-06 04:36:57,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 241 transitions, 1797 flow [2025-02-06 04:36:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:36:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:36:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 254 transitions. [2025-02-06 04:36:57,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8639455782312925 [2025-02-06 04:36:57,014 INFO L175 Difference]: Start difference. First operand has 70 places, 95 transitions, 571 flow. Second operand 7 states and 254 transitions. [2025-02-06 04:36:57,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 241 transitions, 1797 flow [2025-02-06 04:36:57,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 241 transitions, 1690 flow, removed 47 selfloop flow, removed 1 redundant places. [2025-02-06 04:36:57,073 INFO L231 Difference]: Finished difference. Result has 76 places, 125 transitions, 849 flow [2025-02-06 04:36:57,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=849, PETRI_PLACES=76, PETRI_TRANSITIONS=125} [2025-02-06 04:36:57,073 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2025-02-06 04:36:57,074 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 125 transitions, 849 flow [2025-02-06 04:36:57,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:57,074 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:57,074 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2025-02-06 04:36:57,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 04:36:57,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:57,274 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:57,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash 535619719, now seen corresponding path program 4 times [2025-02-06 04:36:57,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:57,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617087732] [2025-02-06 04:36:57,275 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:36:57,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:57,282 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-02-06 04:36:57,300 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 04:36:57,301 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:36:57,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:57,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:57,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617087732] [2025-02-06 04:36:57,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617087732] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:36:57,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690288024] [2025-02-06 04:36:57,398 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:36:57,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:36:57,401 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:36:57,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 04:36:57,435 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-02-06 04:36:57,451 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 04:36:57,451 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:36:57,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:57,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 04:36:57,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:36:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:57,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:36:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:57,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690288024] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:36:57,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:36:57,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-02-06 04:36:57,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566486281] [2025-02-06 04:36:57,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:36:57,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:36:57,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:57,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:36:57,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:36:57,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-06 04:36:57,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 125 transitions, 849 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 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) [2025-02-06 04:36:57,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:57,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-06 04:36:57,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:04,556 INFO L124 PetriNetUnfolderBase]: 53504/87431 cut-off events. [2025-02-06 04:37:04,556 INFO L125 PetriNetUnfolderBase]: For 208162/215339 co-relation queries the response was YES. [2025-02-06 04:37:04,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321893 conditions, 87431 events. 53504/87431 cut-off events. For 208162/215339 co-relation queries the response was YES. Maximal size of possible extension queue 2784. Compared 773970 event pairs, 11051 based on Foata normal form. 3470/89058 useless extension candidates. Maximal degree in co-relation 95935. Up to 58694 conditions per place. [2025-02-06 04:37:05,410 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 185 selfloop transitions, 54 changer transitions 1/258 dead transitions. [2025-02-06 04:37:05,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 258 transitions, 2134 flow [2025-02-06 04:37:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:37:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:37:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2025-02-06 04:37:05,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8373015873015873 [2025-02-06 04:37:05,413 INFO L175 Difference]: Start difference. First operand has 76 places, 125 transitions, 849 flow. Second operand 6 states and 211 transitions. [2025-02-06 04:37:05,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 258 transitions, 2134 flow [2025-02-06 04:37:05,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 258 transitions, 2020 flow, removed 40 selfloop flow, removed 1 redundant places. [2025-02-06 04:37:05,564 INFO L231 Difference]: Finished difference. Result has 83 places, 175 transitions, 1354 flow [2025-02-06 04:37:05,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1354, PETRI_PLACES=83, PETRI_TRANSITIONS=175} [2025-02-06 04:37:05,565 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2025-02-06 04:37:05,567 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 175 transitions, 1354 flow [2025-02-06 04:37:05,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 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) [2025-02-06 04:37:05,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:05,568 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2025-02-06 04:37:05,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 04:37:05,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 04:37:05,772 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:37:05,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1444926887, now seen corresponding path program 5 times [2025-02-06 04:37:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:05,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010521394] [2025-02-06 04:37:05,777 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:37:05,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:05,788 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 3 equivalence classes. [2025-02-06 04:37:05,833 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 04:37:05,834 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 04:37:05,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:37:05,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:05,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010521394] [2025-02-06 04:37:05,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010521394] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:37:05,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411198613] [2025-02-06 04:37:05,979 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:37:05,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:37:05,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:37:05,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:37:05,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 04:37:06,017 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 3 equivalence classes. [2025-02-06 04:37:06,034 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 04:37:06,034 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 04:37:06,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:06,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 04:37:06,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:37:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:37:06,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:37:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:37:06,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411198613] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:37:06,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:37:06,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2025-02-06 04:37:06,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632767935] [2025-02-06 04:37:06,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:37:06,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:37:06,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:06,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:37:06,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:37:06,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2025-02-06 04:37:06,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 175 transitions, 1354 flow. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:06,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:06,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2025-02-06 04:37:06,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand