./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix018_tso.oepc.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/mix018_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3bc57c42fd552df471a50a3f823d776d12ae5a02a1da1686aaab749af4f270bf --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:30:14,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:30:14,293 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:30:14,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:30:14,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:30:14,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:30:14,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:30:14,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:30:14,320 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:30:14,321 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:30:14,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:30:14,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:30:14,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:30:14,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:30:14,322 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:30:14,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:30:14,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:30:14,322 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:30:14,323 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:30:14,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:30:14,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:30:14,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:30:14,324 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:30:14,324 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:30:14,324 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:30:14,324 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:30:14,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:30:14,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:30:14,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:30:14,325 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:30:14,325 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:30:14,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:30:14,325 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 -> 3bc57c42fd552df471a50a3f823d776d12ae5a02a1da1686aaab749af4f270bf [2025-03-13 21:30:14,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:30:14,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:30:14,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:30:14,546 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:30:14,546 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:30:14,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix018_tso.oepc.i [2025-03-13 21:30:15,673 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb122260/230f4c9b315f46539e52419cb35a6c61/FLAG588c10f93 [2025-03-13 21:30:15,933 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:30:15,934 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix018_tso.oepc.i [2025-03-13 21:30:15,950 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb122260/230f4c9b315f46539e52419cb35a6c61/FLAG588c10f93 [2025-03-13 21:30:16,236 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb122260/230f4c9b315f46539e52419cb35a6c61 [2025-03-13 21:30:16,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:30:16,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:30:16,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:30:16,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:30:16,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:30:16,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@758f4670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16, skipping insertion in model container [2025-03-13 21:30:16,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:30:16,374 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/mix018_tso.oepc.i[949,962] [2025-03-13 21:30:16,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:30:16,489 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:30:16,496 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/mix018_tso.oepc.i[949,962] [2025-03-13 21:30:16,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:30:16,563 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:30:16,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16 WrapperNode [2025-03-13 21:30:16,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:30:16,565 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:30:16,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:30:16,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:30:16,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,613 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2025-03-13 21:30:16,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:30:16,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:30:16,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:30:16,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:30:16,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,630 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,648 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 21:30:16,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,664 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:30:16,677 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:30:16,677 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:30:16,677 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:30:16,678 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (1/1) ... [2025-03-13 21:30:16,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:30:16,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:30:16,702 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 21:30:16,705 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 21:30:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-13 21:30:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:30:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-13 21:30:16,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-13 21:30:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-13 21:30:16,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-13 21:30:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-13 21:30:16,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-13 21:30:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-13 21:30:16,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-13 21:30:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:30:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-13 21:30:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:30:16,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:30:16,728 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 21:30:16,835 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:30:16,838 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:30:17,130 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:30:17,131 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:30:17,131 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:30:17,349 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:30:17,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:30:17 BoogieIcfgContainer [2025-03-13 21:30:17,350 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:30:17,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:30:17,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:30:17,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:30:17,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:30:16" (1/3) ... [2025-03-13 21:30:17,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6386f7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:30:17, skipping insertion in model container [2025-03-13 21:30:17,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:30:16" (2/3) ... [2025-03-13 21:30:17,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6386f7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:30:17, skipping insertion in model container [2025-03-13 21:30:17,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:30:17" (3/3) ... [2025-03-13 21:30:17,357 INFO L128 eAbstractionObserver]: Analyzing ICFG mix018_tso.oepc.i [2025-03-13 21:30:17,368 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:30:17,370 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix018_tso.oepc.i that has 5 procedures, 49 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-13 21:30:17,370 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:30:17,418 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:30:17,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2025-03-13 21:30:17,478 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2025-03-13 21:30:17,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:30:17,483 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 92 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 21:30:17,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2025-03-13 21:30:17,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2025-03-13 21:30:17,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:30:17,506 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;@2422254e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:30:17,506 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-13 21:30:17,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:30:17,513 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-13 21:30:17,513 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:30:17,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:30:17,514 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-13 21:30:17,514 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 21:30:17,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:30:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash -218444636, now seen corresponding path program 1 times [2025-03-13 21:30:17,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:30:17,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477992819] [2025-03-13 21:30:17,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:30:17,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:30:17,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-13 21:30:17,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-13 21:30:17,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:30:17,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:30:17,878 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 21:30:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:30:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477992819] [2025-03-13 21:30:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477992819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:30:17,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:30:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 21:30:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288270940] [2025-03-13 21:30:17,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:30:17,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:30:17,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:30:17,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:30:17,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:30:17,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-13 21:30:17,905 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 21:30:17,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:30:17,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-13 21:30:17,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:30:21,678 INFO L124 PetriNetUnfolderBase]: 40307/53476 cut-off events. [2025-03-13 21:30:21,678 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2025-03-13 21:30:21,785 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 1626. Compared 319461 event pairs, 4977 based on Foata normal form. 1476/54719 useless extension candidates. Maximal degree in co-relation 106908. Up to 45831 conditions per place. [2025-03-13 21:30:21,975 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 59 selfloop transitions, 2 changer transitions 2/70 dead transitions. [2025-03-13 21:30:21,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 284 flow [2025-03-13 21:30:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:30:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:30:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2025-03-13 21:30:21,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2025-03-13 21:30:21,991 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 99 transitions. [2025-03-13 21:30:21,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 284 flow [2025-03-13 21:30:22,000 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 21:30:22,002 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2025-03-13 21:30:22,005 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 21:30:22,009 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2025-03-13 21:30:22,010 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2025-03-13 21:30:22,010 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 21:30:22,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:30:22,010 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:30:22,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:30:22,011 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 21:30:22,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:30:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash 279512778, now seen corresponding path program 1 times [2025-03-13 21:30:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:30:22,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502157313] [2025-03-13 21:30:22,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:30:22,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:30:22,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-13 21:30:22,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-13 21:30:22,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:30:22,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:30:22,355 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 21:30:22,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:30:22,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502157313] [2025-03-13 21:30:22,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502157313] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:30:22,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:30:22,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:30:22,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090510405] [2025-03-13 21:30:22,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:30:22,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:30:22,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:30:22,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:30:22,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:30:22,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:30:22,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:30:22,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:30:22,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:30:22,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:30:26,193 INFO L124 PetriNetUnfolderBase]: 53483/71545 cut-off events. [2025-03-13 21:30:26,193 INFO L125 PetriNetUnfolderBase]: For 2820/2820 co-relation queries the response was YES. [2025-03-13 21:30:26,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145303 conditions, 71545 events. 53483/71545 cut-off events. For 2820/2820 co-relation queries the response was YES. Maximal size of possible extension queue 2079. Compared 425675 event pairs, 9851 based on Foata normal form. 0/70395 useless extension candidates. Maximal degree in co-relation 145293. Up to 37153 conditions per place. [2025-03-13 21:30:26,532 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 53 selfloop transitions, 2 changer transitions 97/157 dead transitions. [2025-03-13 21:30:26,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 157 transitions, 642 flow [2025-03-13 21:30:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-13 21:30:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-13 21:30:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2025-03-13 21:30:26,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.576530612244898 [2025-03-13 21:30:26,534 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 8 states and 226 transitions. [2025-03-13 21:30:26,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 157 transitions, 642 flow [2025-03-13 21:30:26,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 157 transitions, 626 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-13 21:30:26,540 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 106 flow [2025-03-13 21:30:26,540 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=106, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2025-03-13 21:30:26,541 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2025-03-13 21:30:26,541 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 106 flow [2025-03-13 21:30:26,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:30:26,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:30:26,541 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 21:30:26,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:30:26,541 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 21:30:26,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:30:26,542 INFO L85 PathProgramCache]: Analyzing trace with hash -994444321, now seen corresponding path program 1 times [2025-03-13 21:30:26,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:30:26,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516919296] [2025-03-13 21:30:26,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:30:26,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:30:26,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-13 21:30:26,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:30:26,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:30:26,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:30:27,014 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 21:30:27,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:30:27,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516919296] [2025-03-13 21:30:27,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516919296] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:30:27,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:30:27,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:30:27,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914016981] [2025-03-13 21:30:27,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:30:27,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:30:27,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:30:27,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:30:27,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:30:27,020 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:30:27,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 106 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 21:30:27,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:30:27,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:30:27,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:30:30,484 INFO L124 PetriNetUnfolderBase]: 41225/55551 cut-off events. [2025-03-13 21:30:30,484 INFO L125 PetriNetUnfolderBase]: For 8626/8626 co-relation queries the response was YES. [2025-03-13 21:30:30,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120080 conditions, 55551 events. 41225/55551 cut-off events. For 8626/8626 co-relation queries the response was YES. Maximal size of possible extension queue 1557. Compared 338710 event pairs, 8853 based on Foata normal form. 1080/56624 useless extension candidates. Maximal degree in co-relation 120065. Up to 44929 conditions per place. [2025-03-13 21:30:30,804 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 57 selfloop transitions, 3 changer transitions 65/130 dead transitions. [2025-03-13 21:30:30,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 130 transitions, 553 flow [2025-03-13 21:30:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:30:30,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:30:30,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2025-03-13 21:30:30,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5539358600583091 [2025-03-13 21:30:30,806 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 106 flow. Second operand 7 states and 190 transitions. [2025-03-13 21:30:30,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 130 transitions, 553 flow [2025-03-13 21:30:31,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 130 transitions, 531 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-13 21:30:31,860 INFO L231 Difference]: Finished difference. Result has 62 places, 43 transitions, 129 flow [2025-03-13 21:30:31,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=43} [2025-03-13 21:30:31,861 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2025-03-13 21:30:31,861 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 43 transitions, 129 flow [2025-03-13 21:30:31,861 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 21:30:31,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:30:31,861 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 21:30:31,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:30:31,861 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 21:30:31,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:30:31,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1120053193, now seen corresponding path program 1 times [2025-03-13 21:30:31,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:30:31,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088432465] [2025-03-13 21:30:31,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:30:31,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:30:31,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-13 21:30:31,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:30:31,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:30:31,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:30:32,714 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 21:30:32,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:30:32,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088432465] [2025-03-13 21:30:32,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088432465] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:30:32,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:30:32,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:30:32,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453097701] [2025-03-13 21:30:32,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:30:32,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:30:32,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:30:32,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:30:32,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:30:32,719 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:30:32,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 43 transitions, 129 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 21:30:32,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:30:32,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:30:32,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:30:36,480 INFO L124 PetriNetUnfolderBase]: 41207/55507 cut-off events. [2025-03-13 21:30:36,481 INFO L125 PetriNetUnfolderBase]: For 28036/28036 co-relation queries the response was YES. [2025-03-13 21:30:36,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131260 conditions, 55507 events. 41207/55507 cut-off events. For 28036/28036 co-relation queries the response was YES. Maximal size of possible extension queue 1514. Compared 327828 event pairs, 15191 based on Foata normal form. 1034/56522 useless extension candidates. Maximal degree in co-relation 131244. Up to 44704 conditions per place. [2025-03-13 21:30:36,825 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 68 selfloop transitions, 14 changer transitions 79/166 dead transitions. [2025-03-13 21:30:36,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 166 transitions, 797 flow [2025-03-13 21:30:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-13 21:30:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-13 21:30:36,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2025-03-13 21:30:36,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5122448979591837 [2025-03-13 21:30:36,827 INFO L175 Difference]: Start difference. First operand has 62 places, 43 transitions, 129 flow. Second operand 10 states and 251 transitions. [2025-03-13 21:30:36,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 166 transitions, 797 flow [2025-03-13 21:30:37,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 166 transitions, 782 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-03-13 21:30:37,510 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 257 flow [2025-03-13 21:30:37,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=257, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2025-03-13 21:30:37,512 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2025-03-13 21:30:37,512 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 257 flow [2025-03-13 21:30:37,512 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 21:30:37,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:30:37,512 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 21:30:37,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:30:37,512 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 21:30:37,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:30:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1065966815, now seen corresponding path program 1 times [2025-03-13 21:30:37,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:30:37,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080577626] [2025-03-13 21:30:37,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:30:37,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:30:37,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:30:37,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:30:37,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:30:37,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:30:37,758 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 21:30:37,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:30:37,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080577626] [2025-03-13 21:30:37,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080577626] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:30:37,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:30:37,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:30:37,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950520598] [2025-03-13 21:30:37,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:30:37,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:30:37,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:30:37,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:30:37,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:30:37,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:30:37,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 21:30:37,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:30:37,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:30:37,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:30:42,369 INFO L124 PetriNetUnfolderBase]: 39918/53311 cut-off events. [2025-03-13 21:30:42,369 INFO L125 PetriNetUnfolderBase]: For 106918/106918 co-relation queries the response was YES. [2025-03-13 21:30:42,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172001 conditions, 53311 events. 39918/53311 cut-off events. For 106918/106918 co-relation queries the response was YES. Maximal size of possible extension queue 1413. Compared 311992 event pairs, 6773 based on Foata normal form. 720/54017 useless extension candidates. Maximal degree in co-relation 171978. Up to 40987 conditions per place. [2025-03-13 21:30:42,821 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 101 selfloop transitions, 13 changer transitions 61/180 dead transitions. [2025-03-13 21:30:42,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 180 transitions, 1129 flow [2025-03-13 21:30:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-13 21:30:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-13 21:30:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2025-03-13 21:30:42,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5637755102040817 [2025-03-13 21:30:42,822 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 257 flow. Second operand 8 states and 221 transitions. [2025-03-13 21:30:42,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 180 transitions, 1129 flow [2025-03-13 21:30:43,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 180 transitions, 1097 flow, removed 16 selfloop flow, removed 4 redundant places. [2025-03-13 21:30:43,983 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 342 flow [2025-03-13 21:30:43,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=342, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2025-03-13 21:30:43,984 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2025-03-13 21:30:43,984 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 342 flow [2025-03-13 21:30:43,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 21:30:43,984 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:30:43,984 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 21:30:43,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:30:43,984 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 21:30:43,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:30:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2012925991, now seen corresponding path program 2 times [2025-03-13 21:30:43,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:30:43,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699002718] [2025-03-13 21:30:43,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:30:43,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:30:43,995 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:30:44,008 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:30:44,008 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:30:44,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:30:44,367 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 21:30:44,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:30:44,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699002718] [2025-03-13 21:30:44,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699002718] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:30:44,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:30:44,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:30:44,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237428178] [2025-03-13 21:30:44,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:30:44,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:30:44,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:30:44,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:30:44,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:30:44,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:30:44,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 342 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 21:30:44,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:30:44,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:30:44,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:30:48,448 INFO L124 PetriNetUnfolderBase]: 38790/52153 cut-off events. [2025-03-13 21:30:48,449 INFO L125 PetriNetUnfolderBase]: For 110435/110435 co-relation queries the response was YES. [2025-03-13 21:30:48,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174901 conditions, 52153 events. 38790/52153 cut-off events. For 110435/110435 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 304563 event pairs, 7010 based on Foata normal form. 720/52859 useless extension candidates. Maximal degree in co-relation 174875. Up to 40627 conditions per place. [2025-03-13 21:30:48,902 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 98 selfloop transitions, 13 changer transitions 61/177 dead transitions. [2025-03-13 21:30:48,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 177 transitions, 1181 flow [2025-03-13 21:30:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-13 21:30:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-13 21:30:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2025-03-13 21:30:48,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5561224489795918 [2025-03-13 21:30:48,903 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 342 flow. Second operand 8 states and 218 transitions. [2025-03-13 21:30:48,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 177 transitions, 1181 flow [2025-03-13 21:30:50,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 177 transitions, 1147 flow, removed 14 selfloop flow, removed 5 redundant places. [2025-03-13 21:30:50,105 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 370 flow [2025-03-13 21:30:50,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=370, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2025-03-13 21:30:50,106 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2025-03-13 21:30:50,106 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 370 flow [2025-03-13 21:30:50,106 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) [2025-03-13 21:30:50,106 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:30:50,106 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:30:50,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 21:30:50,106 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:30:50,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:30:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash 621425796, now seen corresponding path program 1 times [2025-03-13 21:30:50,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:30:50,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903195940] [2025-03-13 21:30:50,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:30:50,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:30:50,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-13 21:30:50,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-13 21:30:50,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:30:50,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:30:50,251 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 21:30:50,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:30:50,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903195940] [2025-03-13 21:30:50,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903195940] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:30:50,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:30:50,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:30:50,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773239364] [2025-03-13 21:30:50,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:30:50,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-13 21:30:50,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:30:50,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-13 21:30:50,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-13 21:30:50,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-13 21:30:50,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:30:50,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:30:50,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-13 21:30:50,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand