/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.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:22:03,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:22:03,063 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 19:22:03,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:22:03,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:22:03,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:22:03,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:22:03,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:22:03,087 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:22:03,087 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:22:03,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:22:03,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:22:03,087 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:22:03,087 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:22:03,087 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:22:03,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:22:03,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:22:03,088 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:22:03,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:22:03,088 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:22:03,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:22:03,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:22:03,089 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 [2025-04-13 19:22:03,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:22:03,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:22:03,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:22:03,262 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:22:03,263 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:22:03,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2025-04-13 19:22:04,560 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293446b2e/9d70473ff3bd40bab9a74314ba556556/FLAGa87b1dc83 [2025-04-13 19:22:04,812 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:22:04,813 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2025-04-13 19:22:04,821 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293446b2e/9d70473ff3bd40bab9a74314ba556556/FLAGa87b1dc83 [2025-04-13 19:22:05,611 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293446b2e/9d70473ff3bd40bab9a74314ba556556 [2025-04-13 19:22:05,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:22:05,614 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:22:05,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:22:05,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:22:05,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:22:05,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76684999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05, skipping insertion in model container [2025-04-13 19:22:05,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,637 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:22:05,849 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/36_stack_cas_p0_vs_concur.i[30869,30882] [2025-04-13 19:22:05,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:22:05,863 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:22:05,900 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/36_stack_cas_p0_vs_concur.i[30869,30882] [2025-04-13 19:22:05,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:22:05,926 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:22:05,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05 WrapperNode [2025-04-13 19:22:05,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:22:05,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:22:05,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:22:05,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:22:05,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,960 INFO L138 Inliner]: procedures = 172, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 158 [2025-04-13 19:22:05,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:22:05,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:22:05,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:22:05,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:22:05,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,983 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 5, 6, 3]. 38 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0, 0]. The 5 writes are split as follows [0, 1, 2, 2]. [2025-04-13 19:22:05,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,987 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:22:05,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:22:05,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:22:05,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:22:05,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (1/1) ... [2025-04-13 19:22:05,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:22:06,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:22:06,022 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 19:22:06,027 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 19:22:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 19:22:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 19:22:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 19:22:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 19:22:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-04-13 19:22:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-04-13 19:22:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 19:22:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 19:22:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 19:22:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 19:22:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:22:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:22:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 19:22:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 19:22:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:22:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:22:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 19:22:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 19:22:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:22:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:22:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:22:06,043 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:22:06,151 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:22:06,152 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:22:06,381 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:22:06,381 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:22:06,381 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:22:06,684 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:22:06,690 INFO L313 CfgBuilder]: Removed 3 assume(true) statements. [2025-04-13 19:22:06,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:22:06 BoogieIcfgContainer [2025-04-13 19:22:06,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:22:06,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:22:06,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:22:06,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:22:06,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:22:05" (1/3) ... [2025-04-13 19:22:06,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36311003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:22:06, skipping insertion in model container [2025-04-13 19:22:06,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:22:05" (2/3) ... [2025-04-13 19:22:06,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36311003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:22:06, skipping insertion in model container [2025-04-13 19:22:06,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:22:06" (3/3) ... [2025-04-13 19:22:06,697 INFO L128 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2025-04-13 19:22:06,706 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:22:06,707 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 36_stack_cas_p0_vs_concur.i that has 2 procedures, 15 locations, 18 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 19:22:06,707 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:22:06,743 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:22:06,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 18 places, 19 transitions, 42 flow [2025-04-13 19:22:06,780 INFO L116 PetriNetUnfolderBase]: 3/19 cut-off events. [2025-04-13 19:22:06,781 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:22:06,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 19 events. 3/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2025-04-13 19:22:06,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 18 places, 19 transitions, 42 flow [2025-04-13 19:22:06,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 18 places, 18 transitions, 40 flow [2025-04-13 19:22:06,795 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:22:06,805 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;@4871f1db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:22:06,806 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 19:22:06,810 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:22:06,810 INFO L116 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-04-13 19:22:06,810 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:22:06,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:22:06,811 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-13 19:22:06,811 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 19:22:06,815 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:22:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash 12919474, now seen corresponding path program 1 times [2025-04-13 19:22:06,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:22:06,821 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380364884] [2025-04-13 19:22:06,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:22:06,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:22:07,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:22:07,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:22:07,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:22:07,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:22:07,395 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:22:07,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:22:07,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:22:07,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:22:07,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:22:07,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:22:07,448 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:22:07,449 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-04-13 19:22:07,450 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-04-13 19:22:07,450 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-04-13 19:22:07,450 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:22:07,451 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:22:07,456 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:22:07,456 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 19:22:07,485 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:22:07,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 33 transitions, 76 flow [2025-04-13 19:22:07,499 INFO L116 PetriNetUnfolderBase]: 6/35 cut-off events. [2025-04-13 19:22:07,500 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:22:07,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 35 events. 6/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 28. Up to 3 conditions per place. [2025-04-13 19:22:07,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 33 transitions, 76 flow [2025-04-13 19:22:07,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 32 transitions, 74 flow [2025-04-13 19:22:07,503 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:22:07,503 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;@4871f1db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:22:07,503 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 19:22:07,512 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:22:07,512 INFO L116 PetriNetUnfolderBase]: 0/14 cut-off events. [2025-04-13 19:22:07,512 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:22:07,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:22:07,512 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 19:22:07,512 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 19:22:07,513 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:22:07,513 INFO L85 PathProgramCache]: Analyzing trace with hash 518999158, now seen corresponding path program 1 times [2025-04-13 19:22:07,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:22:07,513 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491993948] [2025-04-13 19:22:07,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:22:07,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:22:07,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:22:07,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:22:07,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:22:07,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:22:07,725 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:22:07,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:22:07,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:22:07,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:22:07,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:22:07,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:22:07,745 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:22:07,745 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 19:22:07,746 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 19:22:07,746 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2025-04-13 19:22:07,746 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 19:22:07,746 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:22:07,746 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:22:07,746 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:22:07,746 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 19:22:07,779 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:22:07,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 47 transitions, 112 flow [2025-04-13 19:22:07,795 INFO L116 PetriNetUnfolderBase]: 9/51 cut-off events. [2025-04-13 19:22:07,795 INFO L117 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-04-13 19:22:07,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 51 events. 9/51 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 116 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place. [2025-04-13 19:22:07,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 47 transitions, 112 flow [2025-04-13 19:22:07,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 46 transitions, 110 flow [2025-04-13 19:22:07,797 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:22:07,797 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;@4871f1db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:22:07,797 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 19:22:07,806 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:22:07,806 INFO L116 PetriNetUnfolderBase]: 1/26 cut-off events. [2025-04-13 19:22:07,806 INFO L117 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-04-13 19:22:07,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:22:07,806 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2025-04-13 19:22:07,806 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 19:22:07,806 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:22:07,807 INFO L85 PathProgramCache]: Analyzing trace with hash -332205419, now seen corresponding path program 1 times [2025-04-13 19:22:07,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:22:07,807 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094780904] [2025-04-13 19:22:07,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:22:07,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:22:07,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:22:07,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:22:07,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:22:07,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:22:07,962 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:22:07,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:22:07,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:22:07,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:22:07,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:22:07,981 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:22:07,981 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:22:07,981 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 19:22:07,981 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 19:22:07,981 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-04-13 19:22:07,981 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 19:22:07,981 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 19:22:07,981 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:22:07,982 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:22:07,982 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:22:07,982 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-04-13 19:22:08,016 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:22:08,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 61 transitions, 150 flow [2025-04-13 19:22:08,031 INFO L116 PetriNetUnfolderBase]: 12/67 cut-off events. [2025-04-13 19:22:08,031 INFO L117 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-04-13 19:22:08,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 67 events. 12/67 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 182 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 63. Up to 5 conditions per place. [2025-04-13 19:22:08,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 61 transitions, 150 flow [2025-04-13 19:22:08,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 60 transitions, 148 flow [2025-04-13 19:22:08,037 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:22:08,037 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;@4871f1db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:22:08,037 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 19:22:08,044 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:22:08,044 INFO L116 PetriNetUnfolderBase]: 1/28 cut-off events. [2025-04-13 19:22:08,044 INFO L117 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-04-13 19:22:08,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:22:08,044 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:22:08,045 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-04-13 19:22:08,045 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:22:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1500139741, now seen corresponding path program 1 times [2025-04-13 19:22:08,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:22:08,045 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394824622] [2025-04-13 19:22:08,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:22:08,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:22:08,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:22:08,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:22:08,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:22:08,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:22:08,283 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 19:22:08,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:22:08,284 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394824622] [2025-04-13 19:22:08,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394824622] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:22:08,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:22:08,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 19:22:08,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681537321] [2025-04-13 19:22:08,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:22:08,293 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 19:22:08,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:22:08,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 19:22:08,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 19:22:08,317 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 61 [2025-04-13 19:22:08,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 148 flow. Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 19:22:08,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:22:08,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 61 [2025-04-13 19:22:08,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:22:14,224 INFO L116 PetriNetUnfolderBase]: 84920/107201 cut-off events. [2025-04-13 19:22:14,225 INFO L117 PetriNetUnfolderBase]: For 10926/10926 co-relation queries the response was YES. [2025-04-13 19:22:14,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219741 conditions, 107201 events. 84920/107201 cut-off events. For 10926/10926 co-relation queries the response was YES. Maximal size of possible extension queue 1869. Compared 533891 event pairs, 67636 based on Foata normal form. 0/89860 useless extension candidates. Maximal degree in co-relation 86439. Up to 107103 conditions per place. [2025-04-13 19:22:14,762 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 46 selfloop transitions, 0 changer transitions 0/51 dead transitions. [2025-04-13 19:22:14,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 222 flow [2025-04-13 19:22:14,763 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 19:22:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-04-13 19:22:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 65 transitions. [2025-04-13 19:22:14,770 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5327868852459017 [2025-04-13 19:22:14,771 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 148 flow. Second operand 2 states and 65 transitions. [2025-04-13 19:22:14,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 222 flow [2025-04-13 19:22:14,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 216 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-04-13 19:22:14,787 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 124 flow [2025-04-13 19:22:14,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2025-04-13 19:22:14,790 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2025-04-13 19:22:14,790 INFO L485 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 124 flow [2025-04-13 19:22:14,790 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 19:22:14,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:22:14,790 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2025-04-13 19:22:14,791 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:22:14,791 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-04-13 19:22:14,791 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:22:14,791 INFO L85 PathProgramCache]: Analyzing trace with hash 872745039, now seen corresponding path program 1 times [2025-04-13 19:22:14,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:22:14,791 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374704853] [2025-04-13 19:22:14,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:22:14,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:22:15,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 19:22:15,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:22:15,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:22:15,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:22:15,066 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:22:15,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 19:22:15,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:22:15,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:22:15,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:22:15,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:22:15,093 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:22:15,093 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2025-04-13 19:22:15,093 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-04-13 19:22:15,093 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2025-04-13 19:22:15,093 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-04-13 19:22:15,093 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-04-13 19:22:15,093 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-04-13 19:22:15,094 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:22:15,094 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-13 19:22:15,094 WARN L247 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:22:15,094 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-04-13 19:22:15,141 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:22:15,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 75 transitions, 190 flow [2025-04-13 19:22:15,154 INFO L116 PetriNetUnfolderBase]: 15/83 cut-off events. [2025-04-13 19:22:15,154 INFO L117 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-04-13 19:22:15,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 83 events. 15/83 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 234 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 85. Up to 6 conditions per place. [2025-04-13 19:22:15,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 75 transitions, 190 flow [2025-04-13 19:22:15,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 74 transitions, 188 flow [2025-04-13 19:22:15,156 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:22:15,156 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;@4871f1db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:22:15,156 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-13 19:22:15,162 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:22:15,162 INFO L116 PetriNetUnfolderBase]: 1/28 cut-off events. [2025-04-13 19:22:15,162 INFO L117 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-04-13 19:22:15,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:22:15,162 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:22:15,163 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-04-13 19:22:15,163 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:22:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1308263920, now seen corresponding path program 1 times [2025-04-13 19:22:15,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:22:15,163 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603567560] [2025-04-13 19:22:15,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:22:15,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:22:15,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:22:15,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:22:15,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:22:15,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:22:15,318 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 19:22:15,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:22:15,318 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603567560] [2025-04-13 19:22:15,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603567560] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:22:15,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:22:15,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 19:22:15,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924171373] [2025-04-13 19:22:15,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:22:15,323 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 19:22:15,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:22:15,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 19:22:15,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 19:22:15,323 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 75 [2025-04-13 19:22:15,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 188 flow. Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19:22:15,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:22:15,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 75 [2025-04-13 19:22:15,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand