./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix021_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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/mix021_tso.oepc.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 1821be0ec0c098ba0cd2fb39edc7421f58889218b21285544a5e01e847e429e6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:17:14,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:17:14,131 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:17:14,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:17:14,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:17:14,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:17:14,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:17:14,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:17:14,161 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:17:14,161 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:17:14,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:17:14,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:17:14,161 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:17:14,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:17:14,163 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:17:14,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:17:14,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:17:14,164 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:17:14,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:17:14,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:17:14,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:17:14,165 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 -> 1821be0ec0c098ba0cd2fb39edc7421f58889218b21285544a5e01e847e429e6 [2025-03-08 17:17:14,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:17:14,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:17:14,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:17:14,520 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:17:14,520 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:17:14,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix021_tso.oepc.i [2025-03-08 17:17:15,682 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80af59275/1512064beab14752b39b4452f7e1d711/FLAG94cf2236a [2025-03-08 17:17:15,979 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:17:15,980 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix021_tso.oepc.i [2025-03-08 17:17:15,994 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80af59275/1512064beab14752b39b4452f7e1d711/FLAG94cf2236a [2025-03-08 17:17:16,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80af59275/1512064beab14752b39b4452f7e1d711 [2025-03-08 17:17:16,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:17:16,263 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:17:16,264 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:17:16,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:17:16,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:17:16,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e35fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16, skipping insertion in model container [2025-03-08 17:17:16,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:17:16,427 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/mix021_tso.oepc.i[949,962] [2025-03-08 17:17:16,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:17:16,617 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:17:16,624 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/mix021_tso.oepc.i[949,962] [2025-03-08 17:17:16,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:17:16,712 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:17:16,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16 WrapperNode [2025-03-08 17:17:16,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:17:16,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:17:16,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:17:16,714 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:17:16,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,758 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2025-03-08 17:17:16,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:17:16,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:17:16,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:17:16,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:17:16,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,770 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,791 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 17:17:16,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,796 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:17:16,809 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:17:16,812 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:17:16,812 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:17:16,813 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (1/1) ... [2025-03-08 17:17:16,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:17:16,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:17:16,839 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) [2025-03-08 17:17:16,842 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 [2025-03-08 17:17:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:17:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:17:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 17:17:16,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 17:17:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 17:17:16,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 17:17:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 17:17:16,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 17:17:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-08 17:17:16,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-08 17:17:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:17:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:17:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:17:16,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:17:16,863 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:17:16,958 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:17:16,960 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:17:17,181 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:17:17,181 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:17:17,337 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:17:17,337 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:17:17,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:17:17 BoogieIcfgContainer [2025-03-08 17:17:17,338 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:17:17,340 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:17:17,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:17:17,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:17:17,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:17:16" (1/3) ... [2025-03-08 17:17:17,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3379b59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:17:17, skipping insertion in model container [2025-03-08 17:17:17,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:16" (2/3) ... [2025-03-08 17:17:17,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3379b59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:17:17, skipping insertion in model container [2025-03-08 17:17:17,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:17:17" (3/3) ... [2025-03-08 17:17:17,348 INFO L128 eAbstractionObserver]: Analyzing ICFG mix021_tso.oepc.i [2025-03-08 17:17:17,359 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:17:17,361 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix021_tso.oepc.i that has 5 procedures, 49 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-08 17:17:17,361 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:17:17,402 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 17:17:17,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2025-03-08 17:17:17,458 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2025-03-08 17:17:17,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:17:17,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2025-03-08 17:17:17,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2025-03-08 17:17:17,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2025-03-08 17:17:17,476 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:17:17,485 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;@79fd0b1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:17:17,486 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-08 17:17:17,491 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:17:17,492 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-08 17:17:17,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:17:17,492 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:17,493 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:17,493 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:17,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1055852713, now seen corresponding path program 1 times [2025-03-08 17:17:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:17,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389484468] [2025-03-08 17:17:17,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:17,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:17,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 17:17:17,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 17:17:17,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:17,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:17,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389484468] [2025-03-08 17:17:17,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389484468] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:17,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:17,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-08 17:17:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631747858] [2025-03-08 17:17:17,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:17,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:17:17,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:17,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:17:17,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:17:17,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-08 17:17:17,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-03-08 17:17:17,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:17,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-08 17:17:17,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:21,476 INFO L124 PetriNetUnfolderBase]: 40307/53592 cut-off events. [2025-03-08 17:17:21,476 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2025-03-08 17:17:21,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107036 conditions, 53592 events. 40307/53592 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 1588. Compared 315951 event pairs, 5087 based on Foata normal form. 1476/54797 useless extension candidates. Maximal degree in co-relation 107024. Up to 45661 conditions per place. [2025-03-08 17:17:21,778 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 57 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2025-03-08 17:17:21,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 273 flow [2025-03-08 17:17:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:17:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:17:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-08 17:17:21,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6598639455782312 [2025-03-08 17:17:21,792 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 97 transitions. [2025-03-08 17:17:21,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 273 flow [2025-03-08 17:17:21,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:17:21,803 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2025-03-08 17:17:21,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2025-03-08 17:17:21,809 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2025-03-08 17:17:21,809 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2025-03-08 17:17:21,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-03-08 17:17:21,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:21,810 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:21,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:17:21,811 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:21,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:21,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2091577185, now seen corresponding path program 1 times [2025-03-08 17:17:21,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:21,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218398966] [2025-03-08 17:17:21,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:21,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:21,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:17:21,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:17:21,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:21,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:22,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:22,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218398966] [2025-03-08 17:17:22,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218398966] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:22,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:22,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:17:22,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945476030] [2025-03-08 17:17:22,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:22,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:17:22,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:22,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:17:22,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:17:22,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-08 17:17:22,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:22,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:22,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-08 17:17:22,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:29,690 INFO L124 PetriNetUnfolderBase]: 93917/125367 cut-off events. [2025-03-08 17:17:29,690 INFO L125 PetriNetUnfolderBase]: For 4928/4928 co-relation queries the response was YES. [2025-03-08 17:17:29,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255067 conditions, 125367 events. 93917/125367 cut-off events. For 4928/4928 co-relation queries the response was YES. Maximal size of possible extension queue 3402. Compared 808184 event pairs, 4041 based on Foata normal form. 0/123094 useless extension candidates. Maximal degree in co-relation 255057. Up to 58687 conditions per place. [2025-03-08 17:17:30,231 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 76 selfloop transitions, 13 changer transitions 157/251 dead transitions. [2025-03-08 17:17:30,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 251 transitions, 1036 flow [2025-03-08 17:17:30,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:17:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-08 17:17:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 357 transitions. [2025-03-08 17:17:30,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2025-03-08 17:17:30,233 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 12 states and 357 transitions. [2025-03-08 17:17:30,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 251 transitions, 1036 flow [2025-03-08 17:17:30,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 251 transitions, 1012 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:17:30,241 INFO L231 Difference]: Finished difference. Result has 71 places, 52 transitions, 228 flow [2025-03-08 17:17:30,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=228, PETRI_PLACES=71, PETRI_TRANSITIONS=52} [2025-03-08 17:17:30,242 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2025-03-08 17:17:30,242 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 52 transitions, 228 flow [2025-03-08 17:17:30,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:30,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:30,243 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:30,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:17:30,243 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:30,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash 963334912, now seen corresponding path program 1 times [2025-03-08 17:17:30,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:30,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446256412] [2025-03-08 17:17:30,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:30,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:17:30,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:17:30,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:30,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:30,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:30,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446256412] [2025-03-08 17:17:30,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446256412] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:30,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:30,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:17:30,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193787869] [2025-03-08 17:17:30,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:30,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:17:30,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:30,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:17:30,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:17:30,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-08 17:17:30,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:30,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:30,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-08 17:17:30,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:37,269 INFO L124 PetriNetUnfolderBase]: 69471/93327 cut-off events. [2025-03-08 17:17:37,270 INFO L125 PetriNetUnfolderBase]: For 118474/118474 co-relation queries the response was YES. [2025-03-08 17:17:37,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295112 conditions, 93327 events. 69471/93327 cut-off events. For 118474/118474 co-relation queries the response was YES. Maximal size of possible extension queue 2420. Compared 570576 event pairs, 12603 based on Foata normal form. 2268/95570 useless extension candidates. Maximal degree in co-relation 295093. Up to 42813 conditions per place. [2025-03-08 17:17:38,015 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 76 selfloop transitions, 13 changer transitions 118/212 dead transitions. [2025-03-08 17:17:38,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 212 transitions, 1322 flow [2025-03-08 17:17:38,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:17:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:17:38,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2025-03-08 17:17:38,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5693877551020409 [2025-03-08 17:17:38,018 INFO L175 Difference]: Start difference. First operand has 71 places, 52 transitions, 228 flow. Second operand 10 states and 279 transitions. [2025-03-08 17:17:38,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 212 transitions, 1322 flow [2025-03-08 17:17:40,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 212 transitions, 1228 flow, removed 47 selfloop flow, removed 5 redundant places. [2025-03-08 17:17:40,594 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 349 flow [2025-03-08 17:17:40,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=349, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2025-03-08 17:17:40,595 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2025-03-08 17:17:40,595 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 349 flow [2025-03-08 17:17:40,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:40,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:40,595 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] [2025-03-08 17:17:40,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:17:40,595 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:40,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash -518155677, now seen corresponding path program 1 times [2025-03-08 17:17:40,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:40,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196710263] [2025-03-08 17:17:40,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:40,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:40,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 17:17:40,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 17:17:40,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:40,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:40,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:40,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196710263] [2025-03-08 17:17:40,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196710263] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:40,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:40,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:17:40,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999256581] [2025-03-08 17:17:40,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:40,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:17:40,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:40,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:17:40,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:17:40,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-08 17:17:40,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 349 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) [2025-03-08 17:17:40,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:40,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-08 17:17:40,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:46,927 INFO L124 PetriNetUnfolderBase]: 64564/87427 cut-off events. [2025-03-08 17:17:46,927 INFO L125 PetriNetUnfolderBase]: For 172492/172492 co-relation queries the response was YES. [2025-03-08 17:17:47,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294110 conditions, 87427 events. 64564/87427 cut-off events. For 172492/172492 co-relation queries the response was YES. Maximal size of possible extension queue 2158. Compared 545855 event pairs, 15281 based on Foata normal form. 1620/89035 useless extension candidates. Maximal degree in co-relation 294085. Up to 71564 conditions per place. [2025-03-08 17:17:47,658 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 85 selfloop transitions, 5 changer transitions 83/178 dead transitions. [2025-03-08 17:17:47,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 178 transitions, 1353 flow [2025-03-08 17:17:47,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:17:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:17:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2025-03-08 17:17:47,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5481049562682215 [2025-03-08 17:17:47,660 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 349 flow. Second operand 7 states and 188 transitions. [2025-03-08 17:17:47,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 178 transitions, 1353 flow