./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.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/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.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 fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:22:47,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:22:47,088 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:22:47,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:22:47,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:22:47,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:22:47,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:22:47,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:22:47,115 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:22:47,115 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:22:47,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:22:47,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:22:47,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:22:47,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:22:47,115 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:22:47,115 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:22:47,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:22:47,116 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:22:47,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:22:47,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:22:47,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:22:47,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:22:47,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:22:47,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:22:47,116 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:22:47,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:22:47,116 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:22:47,116 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:22:47,117 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:22:47,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:22:47,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:22:47,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:22:47,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:22:47,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:22:47,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:22:47,117 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:22:47,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:22:47,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:22:47,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:22:47,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:22:47,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:22:47,118 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:22:47,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:22:47,118 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 -> fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 [2025-03-08 17:22:47,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:22:47,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:22:47,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:22:47,369 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:22:47,369 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:22:47,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2025-03-08 17:22:48,585 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb1c3a102/da75dd098dfb477996655a5dad878228/FLAGeeb33e5e7 [2025-03-08 17:22:48,835 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:22:48,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2025-03-08 17:22:48,849 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb1c3a102/da75dd098dfb477996655a5dad878228/FLAGeeb33e5e7 [2025-03-08 17:22:48,864 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb1c3a102/da75dd098dfb477996655a5dad878228 [2025-03-08 17:22:48,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:22:48,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:22:48,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:22:48,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:22:48,873 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:22:48,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:22:48" (1/1) ... [2025-03-08 17:22:48,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26eea268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:48, skipping insertion in model container [2025-03-08 17:22:48,875 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:22:48" (1/1) ... [2025-03-08 17:22:48,906 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:22:49,040 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/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2025-03-08 17:22:49,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:22:49,183 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:22:49,193 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/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2025-03-08 17:22:49,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:22:49,249 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:22:49,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49 WrapperNode [2025-03-08 17:22:49,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:22:49,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:22:49,253 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:22:49,253 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:22:49,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,295 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-03-08 17:22:49,296 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:22:49,297 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:22:49,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:22:49,297 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:22:49,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,323 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 17:22:49,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,330 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,334 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:22:49,339 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:22:49,339 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:22:49,339 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:22:49,340 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (1/1) ... [2025-03-08 17:22:49,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:22:49,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:22:49,369 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 17:22:49,372 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 17:22:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:22:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:22:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 17:22:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 17:22:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 17:22:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 17:22:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 17:22:49,393 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 17:22:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:22:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:22:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:22:49,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:22:49,394 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 17:22:49,481 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:22:49,484 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:22:49,623 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:22:49,623 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:22:49,698 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:22:49,700 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:22:49,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:49 BoogieIcfgContainer [2025-03-08 17:22:49,702 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:22:49,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:22:49,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:22:49,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:22:49,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:22:48" (1/3) ... [2025-03-08 17:22:49,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322acee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:22:49, skipping insertion in model container [2025-03-08 17:22:49,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:49" (2/3) ... [2025-03-08 17:22:49,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322acee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:22:49, skipping insertion in model container [2025-03-08 17:22:49,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:49" (3/3) ... [2025-03-08 17:22:49,711 INFO L128 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2025-03-08 17:22:49,721 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:22:49,723 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i that has 4 procedures, 41 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 17:22:49,723 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:22:49,771 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 17:22:49,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 41 transitions, 94 flow [2025-03-08 17:22:49,833 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2025-03-08 17:22:49,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:22:49,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2025-03-08 17:22:49,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 41 transitions, 94 flow [2025-03-08 17:22:49,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2025-03-08 17:22:49,854 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:22:49,867 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;@2d5d87a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:22:49,867 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-08 17:22:49,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:22:49,875 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2025-03-08 17:22:49,875 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:22:49,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:49,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:49,877 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:22:49,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:49,881 INFO L85 PathProgramCache]: Analyzing trace with hash 518684266, now seen corresponding path program 1 times [2025-03-08 17:22:49,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:49,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812977072] [2025-03-08 17:22:49,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:49,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:49,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 17:22:49,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 17:22:49,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:49,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:50,354 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 17:22:50,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:50,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812977072] [2025-03-08 17:22:50,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812977072] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:50,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:50,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:22:50,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687589808] [2025-03-08 17:22:50,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:50,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:22:50,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:50,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:22:50,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:22:50,387 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2025-03-08 17:22:50,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 17:22:50,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:50,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2025-03-08 17:22:50,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:51,844 INFO L124 PetriNetUnfolderBase]: 14469/20971 cut-off events. [2025-03-08 17:22:51,845 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-03-08 17:22:51,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41811 conditions, 20971 events. 14469/20971 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 128801 event pairs, 3999 based on Foata normal form. 619/21586 useless extension candidates. Maximal degree in co-relation 41800. Up to 8654 conditions per place. [2025-03-08 17:22:51,958 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 52 selfloop transitions, 6 changer transitions 73/135 dead transitions. [2025-03-08 17:22:51,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 135 transitions, 547 flow [2025-03-08 17:22:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:22:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:22:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2025-03-08 17:22:51,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2025-03-08 17:22:51,969 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 7 states and 182 transitions. [2025-03-08 17:22:51,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 135 transitions, 547 flow [2025-03-08 17:22:51,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 135 transitions, 542 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-08 17:22:51,984 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 142 flow [2025-03-08 17:22:51,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2025-03-08 17:22:51,988 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2025-03-08 17:22:51,988 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 142 flow [2025-03-08 17:22:51,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 17:22:51,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:51,989 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:51,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:22:51,989 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:22:51,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:51,989 INFO L85 PathProgramCache]: Analyzing trace with hash 799302891, now seen corresponding path program 1 times [2025-03-08 17:22:51,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:51,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730513195] [2025-03-08 17:22:51,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:51,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:51,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:22:52,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:22:52,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:52,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:52,179 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 17:22:52,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:52,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730513195] [2025-03-08 17:22:52,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730513195] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:52,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:52,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:52,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304705348] [2025-03-08 17:22:52,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:52,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:52,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:52,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:52,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:52,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2025-03-08 17:22:52,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 17:22:52,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:52,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2025-03-08 17:22:52,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:53,397 INFO L124 PetriNetUnfolderBase]: 11558/16811 cut-off events. [2025-03-08 17:22:53,398 INFO L125 PetriNetUnfolderBase]: For 12526/12533 co-relation queries the response was YES. [2025-03-08 17:22:53,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42797 conditions, 16811 events. 11558/16811 cut-off events. For 12526/12533 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 96740 event pairs, 3400 based on Foata normal form. 514/17313 useless extension candidates. Maximal degree in co-relation 42781. Up to 4593 conditions per place. [2025-03-08 17:22:53,499 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 60 selfloop transitions, 6 changer transitions 97/167 dead transitions. [2025-03-08 17:22:53,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 167 transitions, 878 flow [2025-03-08 17:22:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:22:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:22:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2025-03-08 17:22:53,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5463414634146342 [2025-03-08 17:22:53,506 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 142 flow. Second operand 10 states and 224 transitions. [2025-03-08 17:22:53,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 167 transitions, 878 flow [2025-03-08 17:22:53,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 167 transitions, 836 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:22:53,596 INFO L231 Difference]: Finished difference. Result has 66 places, 41 transitions, 184 flow [2025-03-08 17:22:53,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=184, PETRI_PLACES=66, PETRI_TRANSITIONS=41} [2025-03-08 17:22:53,596 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2025-03-08 17:22:53,597 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 41 transitions, 184 flow [2025-03-08 17:22:53,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 17:22:53,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:53,597 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] [2025-03-08 17:22:53,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:22:53,597 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:22:53,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:53,598 INFO L85 PathProgramCache]: Analyzing trace with hash -865096047, now seen corresponding path program 1 times [2025-03-08 17:22:53,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:53,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798499362] [2025-03-08 17:22:53,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:53,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 17:22:53,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 17:22:53,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:53,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:53,715 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 17:22:53,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:53,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798499362] [2025-03-08 17:22:53,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798499362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:53,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:53,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:22:53,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719991359] [2025-03-08 17:22:53,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:53,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:22:53,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:53,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:22:53,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:22:53,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2025-03-08 17:22:53,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 41 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 17:22:53,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:53,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2025-03-08 17:22:53,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:54,329 INFO L124 PetriNetUnfolderBase]: 7521/11534 cut-off events. [2025-03-08 17:22:54,330 INFO L125 PetriNetUnfolderBase]: For 15248/15255 co-relation queries the response was YES. [2025-03-08 17:22:54,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30656 conditions, 11534 events. 7521/11534 cut-off events. For 15248/15255 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 69516 event pairs, 1518 based on Foata normal form. 619/12141 useless extension candidates. Maximal degree in co-relation 30631. Up to 5214 conditions per place. [2025-03-08 17:22:54,373 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 77 selfloop transitions, 5 changer transitions 5/92 dead transitions. [2025-03-08 17:22:54,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 92 transitions, 596 flow [2025-03-08 17:22:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:22:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:22:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2025-03-08 17:22:54,375 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2025-03-08 17:22:54,375 INFO L175 Difference]: Start difference. First operand has 66 places, 41 transitions, 184 flow. Second operand 4 states and 107 transitions. [2025-03-08 17:22:54,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 92 transitions, 596 flow [2025-03-08 17:22:54,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 92 transitions, 573 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-08 17:22:54,430 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 199 flow [2025-03-08 17:22:54,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2025-03-08 17:22:54,431 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2025-03-08 17:22:54,431 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 199 flow [2025-03-08 17:22:54,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 17:22:54,431 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:54,431 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] [2025-03-08 17:22:54,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:22:54,431 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:22:54,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash -927629654, now seen corresponding path program 1 times [2025-03-08 17:22:54,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:54,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963045841] [2025-03-08 17:22:54,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:54,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:54,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 17:22:54,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 17:22:54,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:54,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:54,533 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 17:22:54,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:54,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963045841] [2025-03-08 17:22:54,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963045841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:54,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:54,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:22:54,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141768298] [2025-03-08 17:22:54,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:54,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:22:54,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:54,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:22:54,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:22:54,536 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2025-03-08 17:22:54,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 199 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) [2025-03-08 17:22:54,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:54,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2025-03-08 17:22:54,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:54,987 INFO L124 PetriNetUnfolderBase]: 4569/7027 cut-off events. [2025-03-08 17:22:54,988 INFO L125 PetriNetUnfolderBase]: For 7171/7178 co-relation queries the response was YES. [2025-03-08 17:22:55,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19955 conditions, 7027 events. 4569/7027 cut-off events. For 7171/7178 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 38571 event pairs, 941 based on Foata normal form. 406/7421 useless extension candidates. Maximal degree in co-relation 19931. Up to 2691 conditions per place. [2025-03-08 17:22:55,019 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 83 selfloop transitions, 8 changer transitions 19/115 dead transitions. [2025-03-08 17:22:55,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 750 flow [2025-03-08 17:22:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:22:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:22:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2025-03-08 17:22:55,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6682926829268293 [2025-03-08 17:22:55,021 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 199 flow. Second operand 5 states and 137 transitions. [2025-03-08 17:22:55,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 750 flow [2025-03-08 17:22:55,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 115 transitions, 684 flow, removed 29 selfloop flow, removed 6 redundant places. [2025-03-08 17:22:55,041 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 223 flow [2025-03-08 17:22:55,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2025-03-08 17:22:55,045 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2025-03-08 17:22:55,045 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 223 flow [2025-03-08 17:22:55,045 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) [2025-03-08 17:22:55,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:55,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:55,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:22:55,045 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:22:55,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:55,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1065844500, now seen corresponding path program 1 times [2025-03-08 17:22:55,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:55,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695644290] [2025-03-08 17:22:55,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:55,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:55,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:22:55,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:22:55,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:55,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:55,248 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 17:22:55,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:55,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695644290] [2025-03-08 17:22:55,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695644290] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:55,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:55,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:22:55,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095971518] [2025-03-08 17:22:55,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:55,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:22:55,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:55,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:22:55,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:22:55,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2025-03-08 17:22:55,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 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 17:22:55,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:55,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2025-03-08 17:22:55,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:55,874 INFO L124 PetriNetUnfolderBase]: 7518/11553 cut-off events. [2025-03-08 17:22:55,874 INFO L125 PetriNetUnfolderBase]: For 10914/10914 co-relation queries the response was YES. [2025-03-08 17:22:55,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32706 conditions, 11553 events. 7518/11553 cut-off events. For 10914/10914 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 68373 event pairs, 1996 based on Foata normal form. 60/11609 useless extension candidates. Maximal degree in co-relation 32684. Up to 2918 conditions per place. [2025-03-08 17:22:55,918 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 101 selfloop transitions, 10 changer transitions 65/180 dead transitions. [2025-03-08 17:22:55,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 180 transitions, 1170 flow [2025-03-08 17:22:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:22:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:22:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2025-03-08 17:22:55,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2025-03-08 17:22:55,919 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 223 flow. Second operand 8 states and 200 transitions. [2025-03-08 17:22:55,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 180 transitions, 1170 flow [2025-03-08 17:22:55,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 180 transitions, 1068 flow, removed 20 selfloop flow, removed 4 redundant places. [2025-03-08 17:22:55,965 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 248 flow [2025-03-08 17:22:55,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=248, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2025-03-08 17:22:55,966 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2025-03-08 17:22:55,966 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 248 flow [2025-03-08 17:22:55,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 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 17:22:55,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:55,967 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:55,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:22:55,967 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:22:55,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:55,967 INFO L85 PathProgramCache]: Analyzing trace with hash 65443208, now seen corresponding path program 2 times [2025-03-08 17:22:55,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:55,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530225510] [2025-03-08 17:22:55,968 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:22:55,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:55,974 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:22:55,978 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:22:55,979 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:22:55,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:56,099 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 17:22:56,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:56,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530225510] [2025-03-08 17:22:56,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530225510] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:56,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:56,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:22:56,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030452578] [2025-03-08 17:22:56,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:56,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:56,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:56,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:56,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:56,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2025-03-08 17:22:56,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 17:22:56,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:56,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2025-03-08 17:22:56,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:56,543 INFO L124 PetriNetUnfolderBase]: 5422/8385 cut-off events. [2025-03-08 17:22:56,544 INFO L125 PetriNetUnfolderBase]: For 7647/7647 co-relation queries the response was YES. [2025-03-08 17:22:56,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23235 conditions, 8385 events. 5422/8385 cut-off events. For 7647/7647 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 47658 event pairs, 1138 based on Foata normal form. 60/8441 useless extension candidates. Maximal degree in co-relation 23210. Up to 3426 conditions per place. [2025-03-08 17:22:56,569 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 68 selfloop transitions, 5 changer transitions 52/129 dead transitions. [2025-03-08 17:22:56,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 129 transitions, 804 flow [2025-03-08 17:22:56,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:22:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:22:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2025-03-08 17:22:56,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5934959349593496 [2025-03-08 17:22:56,571 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 248 flow. Second operand 6 states and 146 transitions. [2025-03-08 17:22:56,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 129 transitions, 804 flow [2025-03-08 17:22:56,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 129 transitions, 788 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-03-08 17:22:56,591 INFO L231 Difference]: Finished difference. Result has 69 places, 43 transitions, 210 flow [2025-03-08 17:22:56,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=69, PETRI_TRANSITIONS=43} [2025-03-08 17:22:56,591 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2025-03-08 17:22:56,592 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 43 transitions, 210 flow [2025-03-08 17:22:56,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 17:22:56,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:56,592 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:56,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:22:56,592 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:22:56,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1067872970, now seen corresponding path program 3 times [2025-03-08 17:22:56,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:56,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069614962] [2025-03-08 17:22:56,593 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:22:56,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:56,600 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:22:56,604 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:22:56,604 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:22:56,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:56,681 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 17:22:56,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:56,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069614962] [2025-03-08 17:22:56,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069614962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:56,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:56,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:56,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687305267] [2025-03-08 17:22:56,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:56,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:56,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:56,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:56,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:56,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2025-03-08 17:22:56,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 43 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 17:22:56,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:56,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2025-03-08 17:22:56,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:56,867 INFO L124 PetriNetUnfolderBase]: 1456/2279 cut-off events. [2025-03-08 17:22:56,867 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2025-03-08 17:22:56,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6535 conditions, 2279 events. 1456/2279 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 10348 event pairs, 280 based on Foata normal form. 96/2372 useless extension candidates. Maximal degree in co-relation 6508. Up to 788 conditions per place. [2025-03-08 17:22:56,875 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 62 selfloop transitions, 11 changer transitions 4/82 dead transitions. [2025-03-08 17:22:56,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 539 flow [2025-03-08 17:22:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:22:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:22:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2025-03-08 17:22:56,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2025-03-08 17:22:56,877 INFO L175 Difference]: Start difference. First operand has 69 places, 43 transitions, 210 flow. Second operand 6 states and 128 transitions. [2025-03-08 17:22:56,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 539 flow [2025-03-08 17:22:56,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 438 flow, removed 16 selfloop flow, removed 14 redundant places. [2025-03-08 17:22:56,880 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 197 flow [2025-03-08 17:22:56,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2025-03-08 17:22:56,880 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2025-03-08 17:22:56,881 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 197 flow [2025-03-08 17:22:56,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 17:22:56,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:56,881 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:56,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:22:56,881 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:22:56,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:56,882 INFO L85 PathProgramCache]: Analyzing trace with hash -252613505, now seen corresponding path program 1 times [2025-03-08 17:22:56,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:56,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051105794] [2025-03-08 17:22:56,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:56,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:56,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-08 17:22:56,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-08 17:22:56,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:56,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:57,000 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 17:22:57,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:57,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051105794] [2025-03-08 17:22:57,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051105794] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:57,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:57,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:22:57,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806831479] [2025-03-08 17:22:57,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:57,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:22:57,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:57,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:22:57,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:22:57,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2025-03-08 17:22:57,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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 17:22:57,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:57,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2025-03-08 17:22:57,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:57,301 INFO L124 PetriNetUnfolderBase]: 1796/2803 cut-off events. [2025-03-08 17:22:57,302 INFO L125 PetriNetUnfolderBase]: For 3189/3189 co-relation queries the response was YES. [2025-03-08 17:22:57,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7897 conditions, 2803 events. 1796/2803 cut-off events. For 3189/3189 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13010 event pairs, 242 based on Foata normal form. 8/2808 useless extension candidates. Maximal degree in co-relation 7880. Up to 1149 conditions per place. [2025-03-08 17:22:57,308 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 57 selfloop transitions, 5 changer transitions 52/118 dead transitions. [2025-03-08 17:22:57,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 118 transitions, 781 flow [2025-03-08 17:22:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:22:57,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:22:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2025-03-08 17:22:57,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2025-03-08 17:22:57,309 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 197 flow. Second operand 8 states and 149 transitions. [2025-03-08 17:22:57,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 118 transitions, 781 flow [2025-03-08 17:22:57,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 118 transitions, 587 flow, removed 30 selfloop flow, removed 8 redundant places. [2025-03-08 17:22:57,316 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 161 flow [2025-03-08 17:22:57,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=161, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2025-03-08 17:22:57,317 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2025-03-08 17:22:57,317 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 161 flow [2025-03-08 17:22:57,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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 17:22:57,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:57,317 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:57,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:22:57,317 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:22:57,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1498847725, now seen corresponding path program 2 times [2025-03-08 17:22:57,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:57,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309258814] [2025-03-08 17:22:57,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:22:57,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:57,322 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 1 equivalence classes. [2025-03-08 17:22:57,326 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-08 17:22:57,326 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:22:57,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:57,420 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 17:22:57,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:57,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309258814] [2025-03-08 17:22:57,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309258814] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:57,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:57,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:22:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291558747] [2025-03-08 17:22:57,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:57,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:57,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:57,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:57,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2025-03-08 17:22:57,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 161 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 17:22:57,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:57,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2025-03-08 17:22:57,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:57,625 INFO L124 PetriNetUnfolderBase]: 1664/2590 cut-off events. [2025-03-08 17:22:57,625 INFO L125 PetriNetUnfolderBase]: For 1432/1432 co-relation queries the response was YES. [2025-03-08 17:22:57,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6478 conditions, 2590 events. 1664/2590 cut-off events. For 1432/1432 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12044 event pairs, 374 based on Foata normal form. 8/2597 useless extension candidates. Maximal degree in co-relation 6470. Up to 1318 conditions per place. [2025-03-08 17:22:57,630 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2025-03-08 17:22:57,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 462 flow [2025-03-08 17:22:57,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:22:57,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:22:57,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2025-03-08 17:22:57,631 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44308943089430897 [2025-03-08 17:22:57,631 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 161 flow. Second operand 6 states and 109 transitions. [2025-03-08 17:22:57,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 462 flow [2025-03-08 17:22:57,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 438 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-08 17:22:57,634 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2025-03-08 17:22:57,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2025-03-08 17:22:57,634 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2025-03-08 17:22:57,635 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2025-03-08 17:22:57,635 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 17:22:57,637 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-03-08 17:22:57,637 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-03-08 17:22:57,637 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-08 17:22:57,637 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-08 17:22:57,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:22:57,638 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2025-03-08 17:22:57,640 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-08 17:22:57,640 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 17:22:57,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:22:57 BasicIcfg [2025-03-08 17:22:57,644 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 17:22:57,644 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 17:22:57,644 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 17:22:57,644 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 17:22:57,645 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:49" (3/4) ... [2025-03-08 17:22:57,646 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 17:22:57,648 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-08 17:22:57,649 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-08 17:22:57,649 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-08 17:22:57,651 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-03-08 17:22:57,651 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-08 17:22:57,651 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-08 17:22:57,651 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 17:22:57,714 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 17:22:57,714 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 17:22:57,714 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 17:22:57,715 INFO L158 Benchmark]: Toolchain (without parser) took 8848.06ms. Allocated memory was 201.3MB in the beginning and 813.7MB in the end (delta: 612.4MB). Free memory was 153.3MB in the beginning and 415.2MB in the end (delta: -261.9MB). Peak memory consumption was 345.9MB. Max. memory is 16.1GB. [2025-03-08 17:22:57,715 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:57,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.37ms. Allocated memory is still 201.3MB. Free memory was 153.3MB in the beginning and 133.1MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 17:22:57,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.33ms. Allocated memory is still 201.3MB. Free memory was 133.1MB in the beginning and 131.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:57,716 INFO L158 Benchmark]: Boogie Preprocessor took 37.02ms. Allocated memory is still 201.3MB. Free memory was 131.3MB in the beginning and 129.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:57,716 INFO L158 Benchmark]: IcfgBuilder took 363.45ms. Allocated memory is still 201.3MB. Free memory was 129.8MB in the beginning and 110.2MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 17:22:57,716 INFO L158 Benchmark]: TraceAbstraction took 7940.47ms. Allocated memory was 201.3MB in the beginning and 813.7MB in the end (delta: 612.4MB). Free memory was 109.4MB in the beginning and 423.6MB in the end (delta: -314.2MB). Peak memory consumption was 304.0MB. Max. memory is 16.1GB. [2025-03-08 17:22:57,716 INFO L158 Benchmark]: Witness Printer took 70.20ms. Allocated memory is still 813.7MB. Free memory was 419.4MB in the beginning and 415.2MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:57,718 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.37ms. Allocated memory is still 201.3MB. Free memory was 153.3MB in the beginning and 133.1MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.33ms. Allocated memory is still 201.3MB. Free memory was 133.1MB in the beginning and 131.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.02ms. Allocated memory is still 201.3MB. Free memory was 131.3MB in the beginning and 129.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 363.45ms. Allocated memory is still 201.3MB. Free memory was 129.8MB in the beginning and 110.2MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7940.47ms. Allocated memory was 201.3MB in the beginning and 813.7MB in the end (delta: 612.4MB). Free memory was 109.4MB in the beginning and 423.6MB in the end (delta: -314.2MB). Peak memory consumption was 304.0MB. Max. memory is 16.1GB. * Witness Printer took 70.20ms. Allocated memory is still 813.7MB. Free memory was 419.4MB in the beginning and 415.2MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 68 locations, 65 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 726 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 723 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2000 IncrementalHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 13 mSDtfsCounter, 2000 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=5, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 205 ConstructedInterpolants, 0 QuantifiedInterpolants, 1017 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-08 17:22:57,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE