./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix027_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 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/mix027_tso.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 ca8042a994ed433e8dc5deebabd166a79d030a0388291f832432b8dc85340f9d --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:30:58,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:30:58,228 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:30:58,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:30:58,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:30:58,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:30:58,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:30:58,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:30:58,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:30:58,257 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:30:58,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:30:58,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:30:58,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:30:58,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:30:58,258 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:30:58,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:30:58,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:30:58,259 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:30:58,260 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:30:58,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:30:58,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:30:58,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:30:58,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:30:58,261 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:30:58,261 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:30:58,261 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:30:58,261 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:30:58,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:30:58,261 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:30:58,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:30:58,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:30:58,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:30:58,262 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 -> ca8042a994ed433e8dc5deebabd166a79d030a0388291f832432b8dc85340f9d [2025-03-13 21:30:58,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:30:58,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:30:58,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:30:58,510 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:30:58,510 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:30:58,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix027_tso.i [2025-03-13 21:30:59,632 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e7d5058/02c9b7658a554915b769d7f504341605/FLAG6ad46071a [2025-03-13 21:30:59,900 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:30:59,900 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix027_tso.i [2025-03-13 21:30:59,915 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e7d5058/02c9b7658a554915b769d7f504341605/FLAG6ad46071a [2025-03-13 21:31:00,198 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e7d5058/02c9b7658a554915b769d7f504341605 [2025-03-13 21:31:00,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:31:00,202 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:31:00,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:31:00,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:31:00,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:31:00,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac37ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00, skipping insertion in model container [2025-03-13 21:31:00,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,243 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:31:00,369 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/mix027_tso.i[944,957] [2025-03-13 21:31:00,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:31:00,506 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:31:00,514 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/mix027_tso.i[944,957] [2025-03-13 21:31:00,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:31:00,597 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:31:00,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00 WrapperNode [2025-03-13 21:31:00,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:31:00,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:31:00,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:31:00,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:31:00,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,633 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2025-03-13 21:31:00,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:31:00,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:31:00,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:31:00,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:31:00,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,655 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]. [2025-03-13 21:31:00,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,661 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:31:00,666 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:31:00,666 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:31:00,666 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:31:00,667 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (1/1) ... [2025-03-13 21:31:00,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:31:00,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:31:00,696 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) [2025-03-13 21:31:00,698 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 [2025-03-13 21:31:00,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-13 21:31:00,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:31:00,716 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-13 21:31:00,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-13 21:31:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-13 21:31:00,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-13 21:31:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-13 21:31:00,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-13 21:31:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-13 21:31:00,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-13 21:31:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:31:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-13 21:31:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:31:00,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:31:00,718 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:31:00,821 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:31:00,823 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:31:01,085 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:31:01,085 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:31:01,086 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:31:01,317 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:31:01,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:31:01 BoogieIcfgContainer [2025-03-13 21:31:01,317 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:31:01,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:31:01,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:31:01,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:31:01,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:31:00" (1/3) ... [2025-03-13 21:31:01,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e394758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:31:01, skipping insertion in model container [2025-03-13 21:31:01,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:00" (2/3) ... [2025-03-13 21:31:01,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e394758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:31:01, skipping insertion in model container [2025-03-13 21:31:01,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:31:01" (3/3) ... [2025-03-13 21:31:01,326 INFO L128 eAbstractionObserver]: Analyzing ICFG mix027_tso.i [2025-03-13 21:31:01,338 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:31:01,340 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix027_tso.i that has 5 procedures, 49 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-13 21:31:01,340 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:31:01,387 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:31:01,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2025-03-13 21:31:01,442 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2025-03-13 21:31:01,443 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:31:01,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2025-03-13 21:31:01,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2025-03-13 21:31:01,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2025-03-13 21:31:01,458 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:31:01,470 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;@6b95d059, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:31:01,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-13 21:31:01,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:31:01,478 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-13 21:31:01,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:31:01,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:31:01,479 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-13 21:31:01,479 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:31:01,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:31:01,483 INFO L85 PathProgramCache]: Analyzing trace with hash -421293541, now seen corresponding path program 1 times [2025-03-13 21:31:01,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:31:01,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337481348] [2025-03-13 21:31:01,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:31:01,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:31:01,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-13 21:31:01,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-13 21:31:01,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:31:01,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:31:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:31:01,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:31:01,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337481348] [2025-03-13 21:31:01,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337481348] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:31:01,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:31:01,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 21:31:01,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189499900] [2025-03-13 21:31:01,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:31:01,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:31:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:31:01,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:31:01,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:31:01,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-13 21:31:01,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-03-13 21:31:01,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:31:01,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-13 21:31:01,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:31:05,430 INFO L124 PetriNetUnfolderBase]: 40307/53476 cut-off events. [2025-03-13 21:31:05,430 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2025-03-13 21:31:05,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106920 conditions, 53476 events. 40307/53476 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 1592. Compared 318574 event pairs, 4977 based on Foata normal form. 1476/54715 useless extension candidates. Maximal degree in co-relation 106908. Up to 45831 conditions per place. [2025-03-13 21:31:05,699 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 59 selfloop transitions, 2 changer transitions 2/70 dead transitions. [2025-03-13 21:31:05,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 284 flow [2025-03-13 21:31:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:31:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:31:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2025-03-13 21:31:05,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2025-03-13 21:31:05,709 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 99 transitions. [2025-03-13 21:31:05,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 284 flow [2025-03-13 21:31:05,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 278 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-13 21:31:05,716 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2025-03-13 21:31:05,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2025-03-13 21:31:05,720 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2025-03-13 21:31:05,720 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2025-03-13 21:31:05,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-03-13 21:31:05,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:31:05,720 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:31:05,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:31:05,720 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:31:05,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:31:05,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1414815988, now seen corresponding path program 1 times [2025-03-13 21:31:05,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:31:05,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245145025] [2025-03-13 21:31:05,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:31:05,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:31:05,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-13 21:31:05,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-13 21:31:05,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:31:05,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:31:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:31:06,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:31:06,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245145025] [2025-03-13 21:31:06,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245145025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:31:06,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:31:06,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:31:06,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009599433] [2025-03-13 21:31:06,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:31:06,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:31:06,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:31:06,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:31:06,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:31:06,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:31:06,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:31:06,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:31:06,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:31:06,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:31:11,737 INFO L124 PetriNetUnfolderBase]: 67868/90645 cut-off events. [2025-03-13 21:31:11,738 INFO L125 PetriNetUnfolderBase]: For 3525/3525 co-relation queries the response was YES. [2025-03-13 21:31:11,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183924 conditions, 90645 events. 67868/90645 cut-off events. For 3525/3525 co-relation queries the response was YES. Maximal size of possible extension queue 2658. Compared 555178 event pairs, 8819 based on Foata normal form. 0/88938 useless extension candidates. Maximal degree in co-relation 183914. Up to 52705 conditions per place. [2025-03-13 21:31:12,187 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 66 selfloop transitions, 14 changer transitions 149/234 dead transitions. [2025-03-13 21:31:12,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 234 transitions, 962 flow [2025-03-13 21:31:12,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-13 21:31:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-13 21:31:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 340 transitions. [2025-03-13 21:31:12,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2025-03-13 21:31:12,192 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 12 states and 340 transitions. [2025-03-13 21:31:12,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 234 transitions, 962 flow [2025-03-13 21:31:12,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 234 transitions, 938 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-13 21:31:12,203 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 241 flow [2025-03-13 21:31:12,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=241, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2025-03-13 21:31:12,204 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2025-03-13 21:31:12,204 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 241 flow [2025-03-13 21:31:12,204 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) [2025-03-13 21:31:12,204 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:31:12,204 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:31:12,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:31:12,205 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:31:12,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:31:12,207 INFO L85 PathProgramCache]: Analyzing trace with hash -672646451, now seen corresponding path program 1 times [2025-03-13 21:31:12,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:31:12,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182488461] [2025-03-13 21:31:12,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:31:12,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:31:12,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 21:31:12,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:31:12,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:31:12,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:31:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:31:12,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:31:12,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182488461] [2025-03-13 21:31:12,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182488461] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:31:12,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:31:12,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:31:12,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866387124] [2025-03-13 21:31:12,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:31:12,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:31:12,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:31:12,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:31:12,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:31:12,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:31:12,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 241 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) [2025-03-13 21:31:12,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:31:12,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:31:12,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:31:17,241 INFO L124 PetriNetUnfolderBase]: 51617/69399 cut-off events. [2025-03-13 21:31:17,241 INFO L125 PetriNetUnfolderBase]: For 113041/113094 co-relation queries the response was YES. [2025-03-13 21:31:17,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240269 conditions, 69399 events. 51617/69399 cut-off events. For 113041/113094 co-relation queries the response was YES. Maximal size of possible extension queue 1964. Compared 412565 event pairs, 11030 based on Foata normal form. 1656/71004 useless extension candidates. Maximal degree in co-relation 240250. Up to 43405 conditions per place. [2025-03-13 21:31:17,779 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 70 selfloop transitions, 3 changer transitions 101/179 dead transitions. [2025-03-13 21:31:17,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 179 transitions, 1222 flow [2025-03-13 21:31:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:31:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:31:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2025-03-13 21:31:17,781 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5685131195335277 [2025-03-13 21:31:17,781 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 241 flow. Second operand 7 states and 195 transitions. [2025-03-13 21:31:17,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 179 transitions, 1222 flow [2025-03-13 21:31:20,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 179 transitions, 1128 flow, removed 47 selfloop flow, removed 5 redundant places. [2025-03-13 21:31:20,050 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 236 flow [2025-03-13 21:31:20,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2025-03-13 21:31:20,051 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 11 predicate places. [2025-03-13 21:31:20,051 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 236 flow [2025-03-13 21:31:20,051 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) [2025-03-13 21:31:20,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:31:20,052 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:31:20,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:31:20,052 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:31:20,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:31:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash -30956337, now seen corresponding path program 1 times [2025-03-13 21:31:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:31:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568360544] [2025-03-13 21:31:20,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:31:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:31:20,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-13 21:31:20,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:31:20,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:31:20,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:31:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:31:20,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:31:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568360544] [2025-03-13 21:31:20,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568360544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:31:20,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:31:20,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:31:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157541268] [2025-03-13 21:31:20,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:31:20,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:31:20,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:31:20,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:31:20,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:31:20,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:31:20,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-03-13 21:31:20,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:31:20,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:31:20,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:31:25,204 INFO L124 PetriNetUnfolderBase]: 48195/64875 cut-off events. [2025-03-13 21:31:25,204 INFO L125 PetriNetUnfolderBase]: For 83502/83509 co-relation queries the response was YES. [2025-03-13 21:31:25,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210039 conditions, 64875 events. 48195/64875 cut-off events. For 83502/83509 co-relation queries the response was YES. Maximal size of possible extension queue 1770. Compared 394559 event pairs, 11158 based on Foata normal form. 1261/66129 useless extension candidates. Maximal degree in co-relation 210018. Up to 52462 conditions per place. [2025-03-13 21:31:25,750 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 77 selfloop transitions, 4 changer transitions 87/173 dead transitions. [2025-03-13 21:31:25,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 173 transitions, 1117 flow [2025-03-13 21:31:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:31:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:31:25,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2025-03-13 21:31:25,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5539358600583091 [2025-03-13 21:31:25,752 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 236 flow. Second operand 7 states and 190 transitions. [2025-03-13 21:31:25,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 173 transitions, 1117 flow [2025-03-13 21:31:27,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 173 transitions, 1082 flow, removed 10 selfloop flow, removed 7 redundant places. [2025-03-13 21:31:27,232 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 272 flow [2025-03-13 21:31:27,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=272, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2025-03-13 21:31:27,233 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 11 predicate places. [2025-03-13 21:31:27,233 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 272 flow [2025-03-13 21:31:27,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-03-13 21:31:27,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:31:27,233 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:31:27,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:31:27,233 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:31:27,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:31:27,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1480791027, now seen corresponding path program 1 times [2025-03-13 21:31:27,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:31:27,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155128216] [2025-03-13 21:31:27,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:31:27,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:31:27,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-13 21:31:27,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:31:27,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:31:27,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:31:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:31:27,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:31:27,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155128216] [2025-03-13 21:31:27,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155128216] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:31:27,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:31:27,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:31:27,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236237948] [2025-03-13 21:31:27,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:31:27,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:31:27,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:31:27,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:31:27,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:31:27,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:31:27,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:31:27,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:31:27,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:31:27,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:31:32,469 INFO L124 PetriNetUnfolderBase]: 49575/66607 cut-off events. [2025-03-13 21:31:32,469 INFO L125 PetriNetUnfolderBase]: For 105080/105087 co-relation queries the response was YES. [2025-03-13 21:31:32,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226107 conditions, 66607 events. 49575/66607 cut-off events. For 105080/105087 co-relation queries the response was YES. Maximal size of possible extension queue 1772. Compared 402072 event pairs, 10534 based on Foata normal form. 1159/67759 useless extension candidates. Maximal degree in co-relation 226086. Up to 51272 conditions per place. [2025-03-13 21:31:32,976 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 103 selfloop transitions, 11 changer transitions 87/206 dead transitions. [2025-03-13 21:31:32,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 206 transitions, 1372 flow [2025-03-13 21:31:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-13 21:31:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-13 21:31:32,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2025-03-13 21:31:32,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5663265306122449 [2025-03-13 21:31:32,977 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 272 flow. Second operand 8 states and 222 transitions. [2025-03-13 21:31:32,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 206 transitions, 1372 flow [2025-03-13 21:31:33,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 206 transitions, 1360 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-13 21:31:33,613 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 394 flow [2025-03-13 21:31:33,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=394, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2025-03-13 21:31:33,614 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2025-03-13 21:31:33,614 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 394 flow [2025-03-13 21:31:33,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:31:33,614 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:31:33,614 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] [2025-03-13 21:31:33,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:31:33,614 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:31:33,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:31:33,614 INFO L85 PathProgramCache]: Analyzing trace with hash 304899113, now seen corresponding path program 1 times [2025-03-13 21:31:33,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:31:33,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625113633] [2025-03-13 21:31:33,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:31:33,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:31:33,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:31:33,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:31:33,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:31:33,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:31:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:31:34,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:31:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625113633] [2025-03-13 21:31:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625113633] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:31:34,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:31:34,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:31:34,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065488487] [2025-03-13 21:31:34,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:31:34,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:31:34,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:31:34,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:31:34,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:31:34,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:31:34,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 394 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) [2025-03-13 21:31:34,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:31:34,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:31:34,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand