/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 23:50:56,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 23:50:56,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 23:50:56,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 23:50:56,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 23:50:56,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 23:50:56,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 23:50:56,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 23:50:56,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 23:50:56,699 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 23:50:56,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 23:50:56,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 23:50:56,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 23:50:56,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 23:50:56,700 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 23:50:56,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 23:50:56,701 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 23:50:56,701 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 23:50:56,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:50:56,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:50:56,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:50:56,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:50:56,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 23:50:56,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:50:56,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:50:56,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:50:56,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:50:56,702 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 23:50:56,702 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 23:50:56,703 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 23:50:56,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 23:50:56,703 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 23:50:56,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 23:50:56,703 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 23:50:56,703 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 23:50:56,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 23:50:56,703 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 23:50:56,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 23:50:56,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 23:50:56,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 23:50:56,914 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 23:50:56,914 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 23:50:56,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas.i [2025-04-13 23:50:58,242 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d474359de/cde2d36688ef4683a2e9d4cee3710c8f/FLAG0a18d91fd [2025-04-13 23:50:58,507 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 23:50:58,507 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas.i [2025-04-13 23:50:58,522 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d474359de/cde2d36688ef4683a2e9d4cee3710c8f/FLAG0a18d91fd [2025-04-13 23:50:59,294 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d474359de/cde2d36688ef4683a2e9d4cee3710c8f [2025-04-13 23:50:59,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 23:50:59,297 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 23:50:59,298 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 23:50:59,298 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 23:50:59,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 23:50:59,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0a71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59, skipping insertion in model container [2025-04-13 23:50:59,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,322 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 23:50:59,590 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas.i[31294,31307] [2025-04-13 23:50:59,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:50:59,608 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 23:50:59,661 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas.i[31294,31307] [2025-04-13 23:50:59,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:50:59,697 INFO L204 MainTranslator]: Completed translation [2025-04-13 23:50:59,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59 WrapperNode [2025-04-13 23:50:59,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 23:50:59,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 23:50:59,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 23:50:59,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 23:50:59,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,751 INFO L138 Inliner]: procedures = 179, calls = 46, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 243 [2025-04-13 23:50:59,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 23:50:59,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 23:50:59,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 23:50:59,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 23:50:59,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,761 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,779 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 12, 4, 6]. 50 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 2, 1, 1]. The 9 writes are split as follows [0, 5, 2, 2]. [2025-04-13 23:50:59,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,785 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 23:50:59,793 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 23:50:59,793 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 23:50:59,793 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 23:50:59,794 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (1/1) ... [2025-04-13 23:50:59,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:50:59,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:50:59,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 23:50:59,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 23:50:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 23:50:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 23:50:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 23:50:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 23:50:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-04-13 23:50:59,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-04-13 23:50:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 23:50:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 23:50:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 23:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 23:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 23:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 23:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 23:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 23:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 23:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 23:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 23:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 23:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 23:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 23:50:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 23:50:59,843 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 23:50:59,937 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 23:50:59,938 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 23:51:00,271 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 23:51:00,272 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 23:51:00,272 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 23:51:00,740 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:51:00,746 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 23:51:00,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:51:00 BoogieIcfgContainer [2025-04-13 23:51:00,747 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 23:51:00,748 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 23:51:00,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 23:51:00,752 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 23:51:00,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 11:50:59" (1/3) ... [2025-04-13 23:51:00,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7a9717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:51:00, skipping insertion in model container [2025-04-13 23:51:00,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:50:59" (2/3) ... [2025-04-13 23:51:00,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7a9717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:51:00, skipping insertion in model container [2025-04-13 23:51:00,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:51:00" (3/3) ... [2025-04-13 23:51:00,754 INFO L128 eAbstractionObserver]: Analyzing ICFG 26_stack_cas.i [2025-04-13 23:51:00,765 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 23:51:00,766 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 26_stack_cas.i that has 2 procedures, 23 locations, 29 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 23:51:00,766 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 23:51:00,813 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 23:51:00,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 30 transitions, 64 flow [2025-04-13 23:51:00,865 INFO L116 PetriNetUnfolderBase]: 6/30 cut-off events. [2025-04-13 23:51:00,867 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 23:51:00,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 6/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 26. Up to 3 conditions per place. [2025-04-13 23:51:00,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 30 transitions, 64 flow [2025-04-13 23:51:00,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 29 transitions, 62 flow [2025-04-13 23:51:00,880 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:51:00,890 INFO L340 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;@73ef795d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:51:00,890 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 23:51:00,895 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:51:00,895 INFO L116 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-04-13 23:51:00,895 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 23:51:00,895 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:51:00,896 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-13 23:51:00,896 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 23:51:00,899 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:51:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash 19076553, now seen corresponding path program 1 times [2025-04-13 23:51:00,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:51:00,904 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93068757] [2025-04-13 23:51:00,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:51:00,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:51:01,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 23:51:01,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 23:51:01,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:51:01,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:51:01,337 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 23:51:01,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 23:51:01,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 23:51:01,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:51:01,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:51:01,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 23:51:01,391 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 23:51:01,391 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-04-13 23:51:01,392 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-04-13 23:51:01,393 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-04-13 23:51:01,393 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 23:51:01,393 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:51:01,400 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 23:51:01,400 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 23:51:01,452 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 23:51:01,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 55 transitions, 120 flow [2025-04-13 23:51:01,472 INFO L116 PetriNetUnfolderBase]: 12/57 cut-off events. [2025-04-13 23:51:01,472 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 23:51:01,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 57 events. 12/57 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 50. Up to 3 conditions per place. [2025-04-13 23:51:01,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 55 transitions, 120 flow [2025-04-13 23:51:01,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 54 transitions, 118 flow [2025-04-13 23:51:01,475 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:51:01,475 INFO L340 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;@73ef795d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:51:01,477 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 23:51:01,481 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:51:01,481 INFO L116 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-04-13 23:51:01,481 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 23:51:01,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:51:01,481 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 23:51:01,482 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-04-13 23:51:01,482 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:51:01,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1492970491, now seen corresponding path program 1 times [2025-04-13 23:51:01,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:51:01,482 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950257820] [2025-04-13 23:51:01,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:51:01,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:51:01,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 23:51:01,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 23:51:01,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:51:01,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:51:01,798 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 23:51:01,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 23:51:01,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 23:51:01,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:51:01,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:51:01,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 23:51:01,835 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 23:51:01,835 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 23:51:01,835 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 23:51:01,836 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2025-04-13 23:51:01,836 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 23:51:01,836 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 23:51:01,836 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:51:01,836 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 23:51:01,836 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 23:51:01,892 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 23:51:01,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 80 transitions, 178 flow [2025-04-13 23:51:01,921 INFO L116 PetriNetUnfolderBase]: 18/84 cut-off events. [2025-04-13 23:51:01,922 INFO L117 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-04-13 23:51:01,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 18/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2025-04-13 23:51:01,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 80 transitions, 178 flow [2025-04-13 23:51:01,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 79 transitions, 176 flow [2025-04-13 23:51:01,927 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:51:01,929 INFO L340 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;@73ef795d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:51:01,929 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 23:51:01,937 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:51:01,938 INFO L116 PetriNetUnfolderBase]: 1/22 cut-off events. [2025-04-13 23:51:01,938 INFO L117 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-04-13 23:51:01,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:51:01,938 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2025-04-13 23:51:01,938 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-13 23:51:01,938 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:51:01,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1960298354, now seen corresponding path program 1 times [2025-04-13 23:51:01,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:51:01,939 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695232555] [2025-04-13 23:51:01,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:51:01,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:51:02,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 23:51:02,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 23:51:02,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:51:02,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:51:02,134 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 23:51:02,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 23:51:02,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 23:51:02,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:51:02,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:51:02,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 23:51:02,171 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 23:51:02,171 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 23:51:02,171 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 23:51:02,171 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-04-13 23:51:02,171 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 23:51:02,171 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 23:51:02,172 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 23:51:02,172 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:51:02,172 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 23:51:02,172 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-04-13 23:51:02,227 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 23:51:02,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 105 transitions, 238 flow [2025-04-13 23:51:02,256 INFO L116 PetriNetUnfolderBase]: 24/111 cut-off events. [2025-04-13 23:51:02,256 INFO L117 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-04-13 23:51:02,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 111 events. 24/111 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 327 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 98. Up to 5 conditions per place. [2025-04-13 23:51:02,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 105 transitions, 238 flow [2025-04-13 23:51:02,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 104 transitions, 236 flow [2025-04-13 23:51:02,263 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:51:02,263 INFO L340 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;@73ef795d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:51:02,263 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 23:51:02,273 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:51:02,273 INFO L116 PetriNetUnfolderBase]: 2/34 cut-off events. [2025-04-13 23:51:02,273 INFO L117 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-04-13 23:51:02,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:51:02,273 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2025-04-13 23:51:02,273 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-04-13 23:51:02,274 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:51:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2072571088, now seen corresponding path program 1 times [2025-04-13 23:51:02,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:51:02,274 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197657468] [2025-04-13 23:51:02,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:51:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:51:02,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 23:51:02,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 23:51:02,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:51:02,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:51:02,468 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 23:51:02,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 23:51:02,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 23:51:02,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:51:02,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:51:02,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 23:51:02,506 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 23:51:02,506 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2025-04-13 23:51:02,507 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-04-13 23:51:02,507 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2025-04-13 23:51:02,507 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-04-13 23:51:02,507 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-04-13 23:51:02,507 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-04-13 23:51:02,507 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 23:51:02,507 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:51:02,511 WARN L247 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 23:51:02,512 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-04-13 23:51:02,578 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 23:51:02,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 130 transitions, 300 flow [2025-04-13 23:51:02,608 INFO L116 PetriNetUnfolderBase]: 30/138 cut-off events. [2025-04-13 23:51:02,608 INFO L117 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-04-13 23:51:02,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 138 events. 30/138 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 450 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 129. Up to 6 conditions per place. [2025-04-13 23:51:02,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 130 transitions, 300 flow [2025-04-13 23:51:02,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 129 transitions, 298 flow [2025-04-13 23:51:02,614 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:51:02,614 INFO L340 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;@73ef795d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:51:02,614 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-13 23:51:02,625 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:51:02,625 INFO L116 PetriNetUnfolderBase]: 4/55 cut-off events. [2025-04-13 23:51:02,625 INFO L117 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-04-13 23:51:02,625 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:51:02,625 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:51:02,625 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-04-13 23:51:02,626 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:51:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1956985439, now seen corresponding path program 1 times [2025-04-13 23:51:02,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:51:02,626 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859863372] [2025-04-13 23:51:02,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:51:02,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:51:02,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 23:51:02,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 23:51:02,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:51:02,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:51:02,826 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 23:51:02,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 23:51:02,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 23:51:02,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:51:02,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:51:02,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 23:51:02,850 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 23:51:02,850 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2025-04-13 23:51:02,850 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2025-04-13 23:51:02,851 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2025-04-13 23:51:02,851 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2025-04-13 23:51:02,851 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2025-04-13 23:51:02,851 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2025-04-13 23:51:02,851 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-04-13 23:51:02,851 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 23:51:02,851 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:51:02,851 WARN L247 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 23:51:02,851 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-04-13 23:51:02,938 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 23:51:02,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 155 transitions, 364 flow [2025-04-13 23:51:02,976 INFO L116 PetriNetUnfolderBase]: 36/165 cut-off events. [2025-04-13 23:51:02,976 INFO L117 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-04-13 23:51:02,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 165 events. 36/165 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 574 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 163. Up to 7 conditions per place. [2025-04-13 23:51:02,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 155 transitions, 364 flow [2025-04-13 23:51:02,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 154 transitions, 362 flow [2025-04-13 23:51:02,983 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:51:02,984 INFO L340 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;@73ef795d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:51:02,984 INFO L341 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-04-13 23:51:02,998 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:51:02,998 INFO L116 PetriNetUnfolderBase]: 8/73 cut-off events. [2025-04-13 23:51:02,998 INFO L117 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-04-13 23:51:02,999 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:51:02,999 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:51:02,999 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-04-13 23:51:03,000 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:51:03,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1824601560, now seen corresponding path program 1 times [2025-04-13 23:51:03,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:51:03,000 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456517674] [2025-04-13 23:51:03,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:51:03,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:51:03,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 23:51:03,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 23:51:03,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:51:03,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:51:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:51:03,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:51:03,389 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456517674] [2025-04-13 23:51:03,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456517674] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:51:03,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:51:03,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 23:51:03,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431845821] [2025-04-13 23:51:03,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:51:03,394 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 23:51:03,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:51:03,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 23:51:03,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 23:51:03,432 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 155 [2025-04-13 23:51:03,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 154 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2025-04-13 23:51:03,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:51:03,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 155 [2025-04-13 23:51:03,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand