./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:28:53,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:28:54,045 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:28:54,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:28:54,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:28:54,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:28:54,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:28:54,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:28:54,072 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:28:54,073 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:28:54,073 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:28:54,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:28:54,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:28:54,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:28:54,074 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:28:54,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:28:54,075 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:28:54,075 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:28:54,075 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:28:54,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:28:54,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:28:54,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:28:54,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:28:54,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:28:54,076 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:28:54,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:28:54,076 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:28:54,076 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:28:54,076 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:28:54,076 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:28:54,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:28:54,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:28:54,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:28:54,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:28:54,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:28:54,076 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:28:54,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:28:54,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:28:54,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:28:54,077 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:28:54,077 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:28:54,077 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:28:54,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:28:54,078 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 [2025-03-17 06:28:54,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:28:54,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:28:54,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:28:54,323 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:28:54,323 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:28:54,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2025-03-17 06:28:55,465 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a09cff770/dfc905f4367847cf9f1f080cf2a3a1a0/FLAG4d340ad28 [2025-03-17 06:28:55,761 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:28:55,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2025-03-17 06:28:55,783 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a09cff770/dfc905f4367847cf9f1f080cf2a3a1a0/FLAG4d340ad28 [2025-03-17 06:28:56,034 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a09cff770/dfc905f4367847cf9f1f080cf2a3a1a0 [2025-03-17 06:28:56,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:28:56,037 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:28:56,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:28:56,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:28:56,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:28:56,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77776cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56, skipping insertion in model container [2025-03-17 06:28:56,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:28:56,186 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2025-03-17 06:28:56,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:28:56,309 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:28:56,319 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2025-03-17 06:28:56,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:28:56,404 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:28:56,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56 WrapperNode [2025-03-17 06:28:56,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:28:56,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:28:56,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:28:56,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:28:56,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,442 INFO L138 Inliner]: procedures = 176, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 136 [2025-03-17 06:28:56,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:28:56,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:28:56,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:28:56,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:28:56,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,474 INFO L175 MemorySlicer]: Split 25 memory accesses to 2 slices as follows [2, 23]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2025-03-17 06:28:56,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,489 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,498 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:28:56,507 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:28:56,507 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:28:56,507 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:28:56,511 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (1/1) ... [2025-03-17 06:28:56,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:28:56,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:28:56,541 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) [2025-03-17 06:28:56,546 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 [2025-03-17 06:28:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:28:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:28:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:28:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:28:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 06:28:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:28:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-17 06:28:56,567 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-17 06:28:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-17 06:28:56,567 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-17 06:28:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-17 06:28:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-17 06:28:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-17 06:28:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-17 06:28:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:28:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:28:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 06:28:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:28:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:28:56,569 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:28:56,705 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:28:56,707 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:28:57,075 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:28:57,075 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:28:57,366 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:28:57,367 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:28:57,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:28:57 BoogieIcfgContainer [2025-03-17 06:28:57,367 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:28:57,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:28:57,370 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:28:57,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:28:57,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:28:56" (1/3) ... [2025-03-17 06:28:57,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5537a376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:28:57, skipping insertion in model container [2025-03-17 06:28:57,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:28:56" (2/3) ... [2025-03-17 06:28:57,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5537a376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:28:57, skipping insertion in model container [2025-03-17 06:28:57,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:28:57" (3/3) ... [2025-03-17 06:28:57,374 INFO L128 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2025-03-17 06:28:57,385 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:28:57,387 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe019_rmo.opt.i that has 5 procedures, 45 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-17 06:28:57,388 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:28:57,448 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 06:28:57,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2025-03-17 06:28:57,500 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2025-03-17 06:28:57,503 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:28:57,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-03-17 06:28:57,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2025-03-17 06:28:57,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2025-03-17 06:28:57,517 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:28:57,524 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@de99d61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:28:57,524 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-17 06:28:57,541 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:28:57,541 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2025-03-17 06:28:57,541 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:28:57,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:28:57,542 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:28:57,542 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 06:28:57,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:28:57,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1655388003, now seen corresponding path program 1 times [2025-03-17 06:28:57,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:28:57,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700139873] [2025-03-17 06:28:57,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:28:57,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:28:57,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 06:28:57,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 06:28:57,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:28:57,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:28:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:28:58,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:28:58,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700139873] [2025-03-17 06:28:58,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700139873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:28:58,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:28:58,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:28:58,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785231763] [2025-03-17 06:28:58,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:28:58,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:28:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:28:58,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:28:58,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:28:58,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-17 06:28:58,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-17 06:28:58,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:28:58,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-17 06:28:58,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:29:02,020 INFO L124 PetriNetUnfolderBase]: 28003/38145 cut-off events. [2025-03-17 06:29:02,021 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2025-03-17 06:29:02,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75841 conditions, 38145 events. 28003/38145 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 222801 event pairs, 6795 based on Foata normal form. 900/38975 useless extension candidates. Maximal degree in co-relation 75829. Up to 28979 conditions per place. [2025-03-17 06:29:02,219 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 48 selfloop transitions, 3 changer transitions 63/119 dead transitions. [2025-03-17 06:29:02,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 119 transitions, 481 flow [2025-03-17 06:29:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:29:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:29:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2025-03-17 06:29:02,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5682539682539682 [2025-03-17 06:29:02,234 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 179 transitions. [2025-03-17 06:29:02,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 119 transitions, 481 flow [2025-03-17 06:29:02,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 119 transitions, 476 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 06:29:02,250 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 119 flow [2025-03-17 06:29:02,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2025-03-17 06:29:02,255 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2025-03-17 06:29:02,256 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 119 flow [2025-03-17 06:29:02,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-17 06:29:02,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:29:02,256 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:29:02,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:29:02,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 06:29:02,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:29:02,258 INFO L85 PathProgramCache]: Analyzing trace with hash -475094658, now seen corresponding path program 1 times [2025-03-17 06:29:02,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:29:02,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872751737] [2025-03-17 06:29:02,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:29:02,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:29:02,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 06:29:02,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 06:29:02,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:29:02,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:29:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:29:02,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:29:02,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872751737] [2025-03-17 06:29:02,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872751737] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:29:02,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:29:02,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:29:02,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158655122] [2025-03-17 06:29:02,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:29:02,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:29:02,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:29:02,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:29:02,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:29:02,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-17 06:29:02,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-17 06:29:02,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:29:02,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-17 06:29:02,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:29:05,975 INFO L124 PetriNetUnfolderBase]: 26276/35701 cut-off events. [2025-03-17 06:29:05,975 INFO L125 PetriNetUnfolderBase]: For 18761/18761 co-relation queries the response was YES. [2025-03-17 06:29:06,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84313 conditions, 35701 events. 26276/35701 cut-off events. For 18761/18761 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 210900 event pairs, 3362 based on Foata normal form. 840/36527 useless extension candidates. Maximal degree in co-relation 84298. Up to 25961 conditions per place. [2025-03-17 06:29:06,159 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 58 selfloop transitions, 2 changer transitions 65/130 dead transitions. [2025-03-17 06:29:06,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 631 flow [2025-03-17 06:29:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:29:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:29:06,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2025-03-17 06:29:06,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2025-03-17 06:29:06,164 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 119 flow. Second operand 7 states and 186 transitions. [2025-03-17 06:29:06,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 631 flow [2025-03-17 06:29:06,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 130 transitions, 618 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-17 06:29:06,433 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 128 flow [2025-03-17 06:29:06,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2025-03-17 06:29:06,434 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2025-03-17 06:29:06,434 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 128 flow [2025-03-17 06:29:06,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-17 06:29:06,434 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:29:06,434 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:29:06,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:29:06,435 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 06:29:06,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:29:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash 630706111, now seen corresponding path program 1 times [2025-03-17 06:29:06,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:29:06,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125208653] [2025-03-17 06:29:06,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:29:06,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:29:06,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 06:29:06,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:29:06,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:29:06,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:29:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:29:06,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:29:06,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125208653] [2025-03-17 06:29:06,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125208653] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:29:06,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:29:06,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:29:06,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533677469] [2025-03-17 06:29:06,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:29:06,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:29:06,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:29:06,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:29:06,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:29:06,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-17 06:29:06,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-03-17 06:29:06,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:29:06,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-17 06:29:06,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:29:09,226 INFO L124 PetriNetUnfolderBase]: 23847/32409 cut-off events. [2025-03-17 06:29:09,226 INFO L125 PetriNetUnfolderBase]: For 19872/19872 co-relation queries the response was YES. [2025-03-17 06:29:09,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79590 conditions, 32409 events. 23847/32409 cut-off events. For 19872/19872 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 178796 event pairs, 6007 based on Foata normal form. 600/32968 useless extension candidates. Maximal degree in co-relation 79571. Up to 24496 conditions per place. [2025-03-17 06:29:09,448 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 52 selfloop transitions, 2 changer transitions 57/116 dead transitions. [2025-03-17 06:29:09,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 116 transitions, 537 flow [2025-03-17 06:29:09,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:29:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:29:09,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2025-03-17 06:29:09,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2025-03-17 06:29:09,450 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 128 flow. Second operand 7 states and 174 transitions. [2025-03-17 06:29:09,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 116 transitions, 537 flow [2025-03-17 06:29:09,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 116 transitions, 515 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-17 06:29:09,865 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 132 flow [2025-03-17 06:29:09,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2025-03-17 06:29:09,866 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2025-03-17 06:29:09,866 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 132 flow [2025-03-17 06:29:09,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-03-17 06:29:09,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:29:09,866 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:29:09,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:29:09,866 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 06:29:09,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:29:09,866 INFO L85 PathProgramCache]: Analyzing trace with hash 48440450, now seen corresponding path program 1 times [2025-03-17 06:29:09,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:29:09,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478100703] [2025-03-17 06:29:09,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:29:09,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:29:09,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 06:29:09,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:29:09,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:29:09,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:29:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:29:10,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:29:10,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478100703] [2025-03-17 06:29:10,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478100703] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:29:10,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:29:10,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:29:10,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921355359] [2025-03-17 06:29:10,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:29:10,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:29:10,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:29:10,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:29:10,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:29:10,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-17 06:29:10,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2025-03-17 06:29:10,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:29:10,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-17 06:29:10,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:29:14,796 INFO L124 PetriNetUnfolderBase]: 35112/47494 cut-off events. [2025-03-17 06:29:14,796 INFO L125 PetriNetUnfolderBase]: For 28779/28779 co-relation queries the response was YES. [2025-03-17 06:29:14,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114439 conditions, 47494 events. 35112/47494 cut-off events. For 28779/28779 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 278393 event pairs, 13830 based on Foata normal form. 900/48324 useless extension candidates. Maximal degree in co-relation 114419. Up to 22124 conditions per place. [2025-03-17 06:29:15,068 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 55 selfloop transitions, 3 changer transitions 61/124 dead transitions. [2025-03-17 06:29:15,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 124 transitions, 583 flow [2025-03-17 06:29:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:29:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:29:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2025-03-17 06:29:15,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2025-03-17 06:29:15,070 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 132 flow. Second operand 7 states and 183 transitions. [2025-03-17 06:29:15,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 124 transitions, 583 flow [2025-03-17 06:29:15,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 124 transitions, 549 flow, removed 15 selfloop flow, removed 6 redundant places. [2025-03-17 06:29:15,868 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 137 flow [2025-03-17 06:29:15,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=137, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2025-03-17 06:29:15,869 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2025-03-17 06:29:15,869 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 137 flow [2025-03-17 06:29:15,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2025-03-17 06:29:15,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:29:15,869 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:29:15,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:29:15,869 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 06:29:15,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:29:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1367111904, now seen corresponding path program 1 times [2025-03-17 06:29:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:29:15,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043200863] [2025-03-17 06:29:15,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:29:15,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:29:15,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 06:29:15,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 06:29:15,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:29:15,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:29:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:29:16,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:29:16,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043200863] [2025-03-17 06:29:16,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043200863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:29:16,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:29:16,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:29:16,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728830524] [2025-03-17 06:29:16,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:29:16,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:29:16,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:29:16,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:29:16,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:29:16,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-17 06:29:16,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:29:16,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:29:16,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-17 06:29:16,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:29:21,929 INFO L124 PetriNetUnfolderBase]: 51907/70389 cut-off events. [2025-03-17 06:29:21,929 INFO L125 PetriNetUnfolderBase]: For 48917/48917 co-relation queries the response was YES. [2025-03-17 06:29:22,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166629 conditions, 70389 events. 51907/70389 cut-off events. For 48917/48917 co-relation queries the response was YES. Maximal size of possible extension queue 2162. Compared 432236 event pairs, 7505 based on Foata normal form. 900/71219 useless extension candidates. Maximal degree in co-relation 166609. Up to 34381 conditions per place. [2025-03-17 06:29:22,402 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 60 selfloop transitions, 4 changer transitions 42/111 dead transitions. [2025-03-17 06:29:22,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 546 flow [2025-03-17 06:29:22,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:29:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:29:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2025-03-17 06:29:22,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5962962962962963 [2025-03-17 06:29:22,406 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 137 flow. Second operand 6 states and 161 transitions. [2025-03-17 06:29:22,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 546 flow [2025-03-17 06:29:23,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 111 transitions, 519 flow, removed 10 selfloop flow, removed 5 redundant places. [2025-03-17 06:29:23,602 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 139 flow [2025-03-17 06:29:23,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2025-03-17 06:29:23,604 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2025-03-17 06:29:23,604 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 139 flow [2025-03-17 06:29:23,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:29:23,605 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:29:23,605 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:29:23,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:29:23,605 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 06:29:23,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:29:23,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1463021408, now seen corresponding path program 2 times [2025-03-17 06:29:23,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:29:23,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899739201] [2025-03-17 06:29:23,606 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:29:23,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:29:23,617 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 1 equivalence classes. [2025-03-17 06:29:23,639 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 06:29:23,639 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:29:23,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:29:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:29:24,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:29:24,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899739201] [2025-03-17 06:29:24,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899739201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:29:24,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:29:24,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:29:24,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697820466] [2025-03-17 06:29:24,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:29:24,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:29:24,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:29:24,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:29:24,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:29:24,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-17 06:29:24,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 139 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2025-03-17 06:29:24,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:29:24,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-17 06:29:24,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:29:27,979 INFO L124 PetriNetUnfolderBase]: 33035/45242 cut-off events. [2025-03-17 06:29:27,980 INFO L125 PetriNetUnfolderBase]: For 26103/26103 co-relation queries the response was YES. [2025-03-17 06:29:28,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106878 conditions, 45242 events. 33035/45242 cut-off events. For 26103/26103 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 273071 event pairs, 17482 based on Foata normal form. 900/46140 useless extension candidates. Maximal degree in co-relation 106858. Up to 37430 conditions per place. [2025-03-17 06:29:28,245 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 62 selfloop transitions, 7 changer transitions 50/124 dead transitions. [2025-03-17 06:29:28,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 124 transitions, 637 flow [2025-03-17 06:29:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:29:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 06:29:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2025-03-17 06:29:28,246 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2025-03-17 06:29:28,247 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 139 flow. Second operand 8 states and 189 transitions. [2025-03-17 06:29:28,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 124 transitions, 637 flow [2025-03-17 06:29:28,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 124 transitions, 607 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-03-17 06:29:28,507 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 182 flow [2025-03-17 06:29:28,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=182, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2025-03-17 06:29:28,507 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2025-03-17 06:29:28,507 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 182 flow [2025-03-17 06:29:28,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2025-03-17 06:29:28,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:29:28,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:29:28,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:29:28,508 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 06:29:28,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:29:28,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1754003595, now seen corresponding path program 1 times [2025-03-17 06:29:28,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:29:28,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112674686] [2025-03-17 06:29:28,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:29:28,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:29:28,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 06:29:28,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 06:29:28,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:29:28,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:29:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:29:29,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:29:29,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112674686] [2025-03-17 06:29:29,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112674686] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:29:29,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:29:29,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:29:29,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961494472] [2025-03-17 06:29:29,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:29:29,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:29:29,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:29:29,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:29:29,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:29:29,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-17 06:29:29,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 182 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:29:29,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:29:29,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-17 06:29:29,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand