./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix044.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/mix044.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 bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:18:52,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:18:52,462 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:18:52,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:18:52,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:18:52,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:18:52,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:18:52,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:18:52,495 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:18:52,496 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:18:52,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:18:52,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:18:52,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:18:52,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:18:52,497 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:18:52,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:18:52,498 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:18:52,498 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:18:52,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:18:52,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:18:52,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:18:52,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:18:52,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:18:52,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:18:52,499 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:18:52,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:18:52,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:18:52,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:18:52,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:18:52,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:18:52,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:18:52,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:18:52,500 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 -> bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 [2025-03-08 17:18:52,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:18:52,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:18:52,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:18:52,720 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:18:52,721 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:18:52,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix044.opt.i [2025-03-08 17:18:53,840 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44408900f/c72d995c1a96467d9fa1585ee666f476/FLAGf5fc12027 [2025-03-08 17:18:54,158 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:18:54,159 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix044.opt.i [2025-03-08 17:18:54,171 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44408900f/c72d995c1a96467d9fa1585ee666f476/FLAGf5fc12027 [2025-03-08 17:18:54,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44408900f/c72d995c1a96467d9fa1585ee666f476 [2025-03-08 17:18:54,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:18:54,191 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:18:54,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:18:54,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:18:54,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:18:54,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b94c4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54, skipping insertion in model container [2025-03-08 17:18:54,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,229 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:18:54,344 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/mix044.opt.i[944,957] [2025-03-08 17:18:54,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:18:54,455 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:18:54,465 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/mix044.opt.i[944,957] [2025-03-08 17:18:54,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:18:54,530 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:18:54,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54 WrapperNode [2025-03-08 17:18:54,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:18:54,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:18:54,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:18:54,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:18:54,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,555 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,583 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2025-03-08 17:18:54,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:18:54,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:18:54,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:18:54,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:18:54,596 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,622 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 17:18:54,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,627 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:18:54,642 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:18:54,642 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:18:54,642 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:18:54,643 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (1/1) ... [2025-03-08 17:18:54,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:18:54,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:18:54,672 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 17:18:54,674 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 17:18:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:18:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:18:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 17:18:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 17:18:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 17:18:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 17:18:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 17:18:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 17:18:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-08 17:18:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-08 17:18:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:18:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:18:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:18:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:18:54,691 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 17:18:54,805 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:18:54,807 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:18:55,067 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:18:55,068 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:18:55,250 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:18:55,250 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:18:55,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:18:55 BoogieIcfgContainer [2025-03-08 17:18:55,251 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:18:55,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:18:55,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:18:55,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:18:55,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:18:54" (1/3) ... [2025-03-08 17:18:55,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2830f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:18:55, skipping insertion in model container [2025-03-08 17:18:55,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:54" (2/3) ... [2025-03-08 17:18:55,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2830f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:18:55, skipping insertion in model container [2025-03-08 17:18:55,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:18:55" (3/3) ... [2025-03-08 17:18:55,259 INFO L128 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2025-03-08 17:18:55,270 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:18:55,273 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix044.opt.i that has 5 procedures, 50 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-08 17:18:55,274 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:18:55,322 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 17:18:55,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2025-03-08 17:18:55,378 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-03-08 17:18:55,380 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:18:55,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2025-03-08 17:18:55,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2025-03-08 17:18:55,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2025-03-08 17:18:55,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:18:55,405 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;@46cc33c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:18:55,406 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-08 17:18:55,412 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:18:55,413 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-08 17:18:55,413 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:18:55,413 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:18:55,414 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:18:55,414 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:18:55,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:18:55,418 INFO L85 PathProgramCache]: Analyzing trace with hash -909325538, now seen corresponding path program 1 times [2025-03-08 17:18:55,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:18:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113066823] [2025-03-08 17:18:55,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:18:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:18:55,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 17:18:55,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 17:18:55,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:18:55,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:18:55,768 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 17:18:55,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:18:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113066823] [2025-03-08 17:18:55,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113066823] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:18:55,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:18:55,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-08 17:18:55,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461628412] [2025-03-08 17:18:55,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:18:55,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:18:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:18:55,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:18:55,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:18:55,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-03-08 17:18:55,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 17:18:55,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:18:55,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-03-08 17:18:55,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:18:59,425 INFO L124 PetriNetUnfolderBase]: 46139/61167 cut-off events. [2025-03-08 17:18:59,425 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2025-03-08 17:18:59,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122171 conditions, 61167 events. 46139/61167 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 1751. Compared 353327 event pairs, 5315 based on Foata normal form. 1728/62643 useless extension candidates. Maximal degree in co-relation 122159. Up to 52921 conditions per place. [2025-03-08 17:18:59,790 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 55 selfloop transitions, 2 changer transitions 2/66 dead transitions. [2025-03-08 17:18:59,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 262 flow [2025-03-08 17:18:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:18:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:18:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2025-03-08 17:18:59,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2025-03-08 17:18:59,808 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 95 transitions. [2025-03-08 17:18:59,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 262 flow [2025-03-08 17:18:59,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:18:59,819 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-03-08 17:18:59,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2025-03-08 17:18:59,825 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2025-03-08 17:18:59,826 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-03-08 17:18:59,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 17:18:59,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:18:59,828 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:18:59,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:18:59,828 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:18:59,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:18:59,829 INFO L85 PathProgramCache]: Analyzing trace with hash -295297183, now seen corresponding path program 1 times [2025-03-08 17:18:59,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:18:59,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808520485] [2025-03-08 17:18:59,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:18:59,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:18:59,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:18:59,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:18:59,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:18:59,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:00,709 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 17:19:00,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:00,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808520485] [2025-03-08 17:19:00,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808520485] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:00,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:00,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:19:00,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155022363] [2025-03-08 17:19:00,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:00,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:19:00,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:00,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:19:00,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:19:00,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-08 17:19:00,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:19:00,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:00,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-08 17:19:00,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:07,818 INFO L124 PetriNetUnfolderBase]: 107536/143298 cut-off events. [2025-03-08 17:19:07,818 INFO L125 PetriNetUnfolderBase]: For 4092/4092 co-relation queries the response was YES. [2025-03-08 17:19:08,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289897 conditions, 143298 events. 107536/143298 cut-off events. For 4092/4092 co-relation queries the response was YES. Maximal size of possible extension queue 3795. Compared 933117 event pairs, 4601 based on Foata normal form. 0/140701 useless extension candidates. Maximal degree in co-relation 289887. Up to 64579 conditions per place. [2025-03-08 17:19:08,488 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 80 selfloop transitions, 12 changer transitions 165/262 dead transitions. [2025-03-08 17:19:08,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 262 transitions, 1080 flow [2025-03-08 17:19:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:19:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-08 17:19:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 368 transitions. [2025-03-08 17:19:08,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2025-03-08 17:19:08,491 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 12 states and 368 transitions. [2025-03-08 17:19:08,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 262 transitions, 1080 flow [2025-03-08 17:19:08,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 262 transitions, 1056 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:19:08,502 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 217 flow [2025-03-08 17:19:08,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=217, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2025-03-08 17:19:08,503 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2025-03-08 17:19:08,503 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 217 flow [2025-03-08 17:19:08,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:19:08,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:08,503 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:08,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:19:08,503 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:19:08,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:08,504 INFO L85 PathProgramCache]: Analyzing trace with hash 669594818, now seen corresponding path program 1 times [2025-03-08 17:19:08,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:08,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976887814] [2025-03-08 17:19:08,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:19:08,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:08,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:19:08,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:19:08,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:19:08,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:08,691 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 17:19:08,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:08,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976887814] [2025-03-08 17:19:08,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976887814] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:08,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:08,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:19:08,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19244245] [2025-03-08 17:19:08,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:08,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:19:08,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:08,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:19:08,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:19:08,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-08 17:19:08,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:19:08,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:08,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-08 17:19:08,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:15,012 INFO L124 PetriNetUnfolderBase]: 77359/104234 cut-off events. [2025-03-08 17:19:15,012 INFO L125 PetriNetUnfolderBase]: For 110218/110230 co-relation queries the response was YES. [2025-03-08 17:19:15,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305001 conditions, 104234 events. 77359/104234 cut-off events. For 110218/110230 co-relation queries the response was YES. Maximal size of possible extension queue 2630. Compared 644795 event pairs, 21623 based on Foata normal form. 2592/106791 useless extension candidates. Maximal degree in co-relation 304982. Up to 58429 conditions per place. [2025-03-08 17:19:15,665 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 69 selfloop transitions, 3 changer transitions 93/170 dead transitions. [2025-03-08 17:19:15,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 170 transitions, 1037 flow [2025-03-08 17:19:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:19:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:19:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2025-03-08 17:19:15,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5657142857142857 [2025-03-08 17:19:15,666 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 217 flow. Second operand 7 states and 198 transitions. [2025-03-08 17:19:15,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 170 transitions, 1037 flow [2025-03-08 17:19:18,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 170 transitions, 973 flow, removed 32 selfloop flow, removed 5 redundant places. [2025-03-08 17:19:18,009 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 216 flow [2025-03-08 17:19:18,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2025-03-08 17:19:18,010 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2025-03-08 17:19:18,010 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 216 flow [2025-03-08 17:19:18,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:19:18,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:18,010 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 17:19:18,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:19:18,011 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:19:18,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:18,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1254492991, now seen corresponding path program 1 times [2025-03-08 17:19:18,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:18,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697934430] [2025-03-08 17:19:18,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:19:18,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:18,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 17:19:18,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 17:19:18,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:19:18,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:18,521 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 17:19:18,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:18,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697934430] [2025-03-08 17:19:18,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697934430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:18,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:18,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:19:18,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262136653] [2025-03-08 17:19:18,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:18,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:19:18,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:18,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:19:18,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:19:18,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-08 17:19:18,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 17:19:18,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:18,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-08 17:19:18,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:24,339 INFO L124 PetriNetUnfolderBase]: 68899/92966 cut-off events. [2025-03-08 17:19:24,340 INFO L125 PetriNetUnfolderBase]: For 77512/77524 co-relation queries the response was YES. [2025-03-08 17:19:24,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261913 conditions, 92966 events. 68899/92966 cut-off events. For 77512/77524 co-relation queries the response was YES. Maximal size of possible extension queue 2169. Compared 564188 event pairs, 17027 based on Foata normal form. 1622/94568 useless extension candidates. Maximal degree in co-relation 261892. Up to 67175 conditions per place. [2025-03-08 17:19:24,999 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 93 selfloop transitions, 7 changer transitions 83/188 dead transitions. [2025-03-08 17:19:25,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 188 transitions, 1120 flow [2025-03-08 17:19:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:19:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:19:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2025-03-08 17:19:25,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5475 [2025-03-08 17:19:25,002 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 216 flow. Second operand 8 states and 219 transitions. [2025-03-08 17:19:25,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 188 transitions, 1120 flow [2025-03-08 17:19:26,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 188 transitions, 1094 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-08 17:19:26,793 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 283 flow [2025-03-08 17:19:26,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=283, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2025-03-08 17:19:26,794 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2025-03-08 17:19:26,794 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 283 flow [2025-03-08 17:19:26,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 17:19:26,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:26,794 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] [2025-03-08 17:19:26,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:19:26,795 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:19:26,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:26,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1014606502, now seen corresponding path program 1 times [2025-03-08 17:19:26,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:26,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113282034] [2025-03-08 17:19:26,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:19:26,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:26,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:19:26,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:19:26,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:19:26,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:19:27,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:27,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113282034] [2025-03-08 17:19:27,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113282034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:27,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:27,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:19:27,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892985980] [2025-03-08 17:19:27,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:27,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:19:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:27,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:19:27,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:19:27,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-03-08 17:19:27,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 17:19:27,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:27,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-03-08 17:19:27,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:31,679 INFO L124 PetriNetUnfolderBase]: 54342/75291 cut-off events. [2025-03-08 17:19:31,679 INFO L125 PetriNetUnfolderBase]: For 93880/93932 co-relation queries the response was YES. [2025-03-08 17:19:31,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220853 conditions, 75291 events. 54342/75291 cut-off events. For 93880/93932 co-relation queries the response was YES. Maximal size of possible extension queue 1957. Compared 485322 event pairs, 7140 based on Foata normal form. 2873/78152 useless extension candidates. Maximal degree in co-relation 220830. Up to 37969 conditions per place. [2025-03-08 17:19:32,192 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 123 selfloop transitions, 6 changer transitions 1/136 dead transitions. [2025-03-08 17:19:32,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 136 transitions, 959 flow [2025-03-08 17:19:32,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:19:32,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:19:32,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2025-03-08 17:19:32,193 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-03-08 17:19:32,193 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 283 flow. Second operand 4 states and 130 transitions. [2025-03-08 17:19:32,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 136 transitions, 959 flow [2025-03-08 17:19:32,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 136 transitions, 955 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-08 17:19:32,485 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 321 flow [2025-03-08 17:19:32,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2025-03-08 17:19:32,486 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2025-03-08 17:19:32,486 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 321 flow [2025-03-08 17:19:32,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 17:19:32,486 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:32,486 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] [2025-03-08 17:19:32,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:19:32,487 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:19:32,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1570693834, now seen corresponding path program 1 times [2025-03-08 17:19:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:32,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418002485] [2025-03-08 17:19:32,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:19:32,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:32,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 17:19:32,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 17:19:32,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:19:32,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:32,624 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 17:19:32,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:32,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418002485] [2025-03-08 17:19:32,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418002485] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:32,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:32,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:19:32,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389521790] [2025-03-08 17:19:32,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:32,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:19:32,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:32,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:19:32,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:19:32,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-03-08 17:19:32,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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 17:19:32,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:32,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-03-08 17:19:32,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand