./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/mix037_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 526eb61a43a151355b0c30c3cdf9498dba5b0f807210313241440694b1deb106 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:07:23,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:07:23,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:07:23,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:07:23,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:07:23,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:07:23,314 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:07:23,315 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:07:23,315 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:07:23,315 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:07:23,315 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:07:23,315 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:07:23,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:07:23,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:07:23,315 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:07:23,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:07:23,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:07:23,315 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:07:23,316 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:07:23,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:07:23,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:07:23,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:07:23,317 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:07:23,317 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:07:23,317 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:07:23,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:07:23,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:07:23,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:07:23,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:07:23,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:07:23,318 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 -> 526eb61a43a151355b0c30c3cdf9498dba5b0f807210313241440694b1deb106 [2025-03-04 02:07:23,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:07:23,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:07:23,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:07:23,596 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:07:23,597 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:07:23,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2025-03-04 02:07:24,800 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49326b014/5796dd5ffd0d45858db54b562d457e27/FLAG8d4120dfe [2025-03-04 02:07:25,062 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:07:25,062 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2025-03-04 02:07:25,073 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49326b014/5796dd5ffd0d45858db54b562d457e27/FLAG8d4120dfe [2025-03-04 02:07:25,084 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49326b014/5796dd5ffd0d45858db54b562d457e27 [2025-03-04 02:07:25,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:07:25,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:07:25,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:07:25,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:07:25,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:07:25,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a45f6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25, skipping insertion in model container [2025-03-04 02:07:25,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,124 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:07:25,251 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/mix037_tso.oepc.i[949,962] [2025-03-04 02:07:25,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:07:25,444 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:07:25,452 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/mix037_tso.oepc.i[949,962] [2025-03-04 02:07:25,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:07:25,530 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:07:25,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25 WrapperNode [2025-03-04 02:07:25,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:07:25,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:07:25,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:07:25,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:07:25,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,581 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 148 [2025-03-04 02:07:25,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:07:25,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:07:25,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:07:25,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:07:25,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,594 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,614 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]. [2025-03-04 02:07:25,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,626 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:07:25,638 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:07:25,638 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:07:25,638 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:07:25,639 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (1/1) ... [2025-03-04 02:07:25,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:07:25,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:07:25,664 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) [2025-03-04 02:07:25,670 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 [2025-03-04 02:07:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 02:07:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:07:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-04 02:07:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-04 02:07:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-04 02:07:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-04 02:07:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-04 02:07:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-04 02:07:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-04 02:07:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-04 02:07:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:07:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 02:07:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:07:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:07:25,687 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:07:25,798 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:07:25,800 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:07:26,126 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:07:26,127 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:07:26,329 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:07:26,330 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:07:26,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:07:26 BoogieIcfgContainer [2025-03-04 02:07:26,330 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:07:26,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:07:26,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:07:26,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:07:26,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:07:25" (1/3) ... [2025-03-04 02:07:26,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db2a4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:07:26, skipping insertion in model container [2025-03-04 02:07:26,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:07:25" (2/3) ... [2025-03-04 02:07:26,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db2a4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:07:26, skipping insertion in model container [2025-03-04 02:07:26,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:07:26" (3/3) ... [2025-03-04 02:07:26,340 INFO L128 eAbstractionObserver]: Analyzing ICFG mix037_tso.oepc.i [2025-03-04 02:07:26,352 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:07:26,355 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix037_tso.oepc.i that has 5 procedures, 50 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 02:07:26,355 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:07:26,413 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 02:07:26,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2025-03-04 02:07:26,478 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-03-04 02:07:26,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:07:26,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2025-03-04 02:07:26,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2025-03-04 02:07:26,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2025-03-04 02:07:26,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:07:26,507 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;@b9db5c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:07:26,509 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-04 02:07:26,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:07:26,514 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-03-04 02:07:26,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:07:26,514 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:07:26,515 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 02:07:26,515 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 02:07:26,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:07:26,520 INFO L85 PathProgramCache]: Analyzing trace with hash -181286418, now seen corresponding path program 1 times [2025-03-04 02:07:26,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:07:26,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726444169] [2025-03-04 02:07:26,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:07:26,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:07:26,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 02:07:26,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 02:07:26,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:07:26,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:07:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:07:26,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:07:26,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726444169] [2025-03-04 02:07:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726444169] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:07:26,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:07:26,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 02:07:26,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916504529] [2025-03-04 02:07:26,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:07:26,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:07:26,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:07:26,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:07:26,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:07:26,962 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-03-04 02:07:26,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 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) [2025-03-04 02:07:26,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:07:26,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-03-04 02:07:26,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:07:31,255 INFO L124 PetriNetUnfolderBase]: 46139/61147 cut-off events. [2025-03-04 02:07:31,255 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2025-03-04 02:07:31,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122151 conditions, 61147 events. 46139/61147 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 1793. Compared 367571 event pairs, 5709 based on Foata normal form. 1692/62579 useless extension candidates. Maximal degree in co-relation 122139. Up to 52371 conditions per place. [2025-03-04 02:07:31,564 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 61 selfloop transitions, 2 changer transitions 2/72 dead transitions. [2025-03-04 02:07:31,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 292 flow [2025-03-04 02:07:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:07:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:07:31,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-03-04 02:07:31,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2025-03-04 02:07:31,580 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 101 transitions. [2025-03-04 02:07:31,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 292 flow [2025-03-04 02:07:31,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 286 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 02:07:31,592 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-03-04 02:07:31,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2025-03-04 02:07:31,596 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2025-03-04 02:07:31,598 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-03-04 02:07:31,598 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) [2025-03-04 02:07:31,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:07:31,598 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:07:31,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:07:31,599 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)] === [2025-03-04 02:07:31,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:07:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash 15444957, now seen corresponding path program 1 times [2025-03-04 02:07:31,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:07:31,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752805594] [2025-03-04 02:07:31,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:07:31,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:07:31,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 02:07:31,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 02:07:31,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:07:31,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:07:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:07:31,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:07:31,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752805594] [2025-03-04 02:07:31,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752805594] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:07:31,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:07:31,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 02:07:31,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525779512] [2025-03-04 02:07:31,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:07:31,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:07:31,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:07:31,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:07:31,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:07:31,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-04 02:07:31,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 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) [2025-03-04 02:07:31,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:07:31,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-04 02:07:31,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:07:36,700 INFO L124 PetriNetUnfolderBase]: 59315/79103 cut-off events. [2025-03-04 02:07:36,700 INFO L125 PetriNetUnfolderBase]: For 3108/3108 co-relation queries the response was YES. [2025-03-04 02:07:36,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160709 conditions, 79103 events. 59315/79103 cut-off events. For 3108/3108 co-relation queries the response was YES. Maximal size of possible extension queue 2174. Compared 470597 event pairs, 13415 based on Foata normal form. 0/77998 useless extension candidates. Maximal degree in co-relation 160699. Up to 37153 conditions per place. [2025-03-04 02:07:37,054 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 54 selfloop transitions, 2 changer transitions 99/160 dead transitions. [2025-03-04 02:07:37,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 160 transitions, 654 flow [2025-03-04 02:07:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 02:07:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 02:07:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2025-03-04 02:07:37,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5725 [2025-03-04 02:07:37,057 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 229 transitions. [2025-03-04 02:07:37,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 160 transitions, 654 flow [2025-03-04 02:07:37,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 160 transitions, 638 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 02:07:37,067 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 108 flow [2025-03-04 02:07:37,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=108, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2025-03-04 02:07:37,068 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2025-03-04 02:07:37,068 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 108 flow [2025-03-04 02:07:37,068 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) [2025-03-04 02:07:37,068 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:07:37,068 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:07:37,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 02:07:37,069 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)] === [2025-03-04 02:07:37,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:07:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1554729245, now seen corresponding path program 1 times [2025-03-04 02:07:37,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:07:37,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951010842] [2025-03-04 02:07:37,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:07:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:07:37,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 02:07:37,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 02:07:37,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:07:37,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:07:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:07:37,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:07:37,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951010842] [2025-03-04 02:07:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951010842] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:07:37,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:07:37,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 02:07:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172498774] [2025-03-04 02:07:37,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:07:37,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:07:37,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:07:37,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:07:37,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:07:37,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-04 02:07:37,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:07:37,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:07:37,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-04 02:07:37,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:07:41,799 INFO L124 PetriNetUnfolderBase]: 44789/60195 cut-off events. [2025-03-04 02:07:41,799 INFO L125 PetriNetUnfolderBase]: For 10406/10406 co-relation queries the response was YES. [2025-03-04 02:07:42,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129368 conditions, 60195 events. 44789/60195 cut-off events. For 10406/10406 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 364783 event pairs, 9911 based on Foata normal form. 1080/61271 useless extension candidates. Maximal degree in co-relation 129353. Up to 49385 conditions per place. [2025-03-04 02:07:42,190 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 59 selfloop transitions, 3 changer transitions 65/132 dead transitions. [2025-03-04 02:07:42,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 132 transitions, 561 flow [2025-03-04 02:07:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 02:07:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 02:07:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2025-03-04 02:07:42,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2025-03-04 02:07:42,192 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 108 flow. Second operand 7 states and 192 transitions. [2025-03-04 02:07:42,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 132 transitions, 561 flow [2025-03-04 02:07:43,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 132 transitions, 539 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-04 02:07:43,171 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 131 flow [2025-03-04 02:07:43,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2025-03-04 02:07:43,172 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2025-03-04 02:07:43,172 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 131 flow [2025-03-04 02:07:43,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:07:43,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:07:43,173 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] [2025-03-04 02:07:43,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 02:07:43,173 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)] === [2025-03-04 02:07:43,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:07:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash 482561163, now seen corresponding path program 1 times [2025-03-04 02:07:43,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:07:43,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455902788] [2025-03-04 02:07:43,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:07:43,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:07:43,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 02:07:43,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 02:07:43,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:07:43,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:07:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:07:43,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:07:43,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455902788] [2025-03-04 02:07:43,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455902788] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:07:43,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:07:43,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 02:07:43,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698028105] [2025-03-04 02:07:43,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:07:43,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 02:07:43,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:07:43,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 02:07:43,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 02:07:43,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-04 02:07:43,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 131 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) [2025-03-04 02:07:43,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:07:43,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-04 02:07:43,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:07:48,012 INFO L124 PetriNetUnfolderBase]: 46369/62195 cut-off events. [2025-03-04 02:07:48,013 INFO L125 PetriNetUnfolderBase]: For 29230/29233 co-relation queries the response was YES. [2025-03-04 02:07:48,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146207 conditions, 62195 events. 46369/62195 cut-off events. For 29230/29233 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 374722 event pairs, 9263 based on Foata normal form. 998/63189 useless extension candidates. Maximal degree in co-relation 146191. Up to 48261 conditions per place. [2025-03-04 02:07:48,443 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 79 selfloop transitions, 7 changer transitions 65/156 dead transitions. [2025-03-04 02:07:48,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 156 transitions, 711 flow [2025-03-04 02:07:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 02:07:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 02:07:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2025-03-04 02:07:48,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-03-04 02:07:48,445 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 131 flow. Second operand 8 states and 225 transitions. [2025-03-04 02:07:48,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 156 transitions, 711 flow [2025-03-04 02:07:49,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 156 transitions, 700 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-04 02:07:49,040 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 191 flow [2025-03-04 02:07:49,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2025-03-04 02:07:49,041 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2025-03-04 02:07:49,041 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 191 flow [2025-03-04 02:07:49,041 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) [2025-03-04 02:07:49,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:07:49,041 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] [2025-03-04 02:07:49,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 02:07:49,041 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)] === [2025-03-04 02:07:49,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:07:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1977300041, now seen corresponding path program 1 times [2025-03-04 02:07:49,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:07:49,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566120892] [2025-03-04 02:07:49,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:07:49,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:07:49,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-04 02:07:49,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 02:07:49,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:07:49,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:07:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:07:49,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:07:49,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566120892] [2025-03-04 02:07:49,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566120892] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:07:49,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:07:49,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:07:49,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617864200] [2025-03-04 02:07:49,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:07:49,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 02:07:49,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:07:49,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 02:07:49,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 02:07:49,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-04 02:07:49,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2025-03-04 02:07:49,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:07:49,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-04 02:07:49,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:07:53,855 INFO L124 PetriNetUnfolderBase]: 45245/60262 cut-off events. [2025-03-04 02:07:53,855 INFO L125 PetriNetUnfolderBase]: For 85221/85224 co-relation queries the response was YES. [2025-03-04 02:07:54,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171532 conditions, 60262 events. 45245/60262 cut-off events. For 85221/85224 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 355841 event pairs, 5328 based on Foata normal form. 722/60978 useless extension candidates. Maximal degree in co-relation 171512. Up to 47433 conditions per place. [2025-03-04 02:07:54,346 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 85 selfloop transitions, 9 changer transitions 61/160 dead transitions. [2025-03-04 02:07:54,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 160 transitions, 875 flow [2025-03-04 02:07:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 02:07:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 02:07:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2025-03-04 02:07:54,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56 [2025-03-04 02:07:54,348 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 191 flow. Second operand 8 states and 224 transitions. [2025-03-04 02:07:54,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 160 transitions, 875 flow [2025-03-04 02:07:55,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 848 flow, removed 9 selfloop flow, removed 4 redundant places. [2025-03-04 02:07:55,507 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 242 flow [2025-03-04 02:07:55,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=242, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2025-03-04 02:07:55,508 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2025-03-04 02:07:55,508 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 242 flow [2025-03-04 02:07:55,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2025-03-04 02:07:55,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:07:55,508 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] [2025-03-04 02:07:55,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 02:07:55,508 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)] === [2025-03-04 02:07:55,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:07:55,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1425566025, now seen corresponding path program 2 times [2025-03-04 02:07:55,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:07:55,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161006132] [2025-03-04 02:07:55,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 02:07:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:07:55,527 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-03-04 02:07:55,537 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 02:07:55,538 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 02:07:55,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:07:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:07:55,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:07:55,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161006132] [2025-03-04 02:07:55,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161006132] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:07:55,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:07:55,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 02:07:55,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417065504] [2025-03-04 02:07:55,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:07:55,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 02:07:55,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:07:55,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 02:07:55,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 02:07:55,863 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-04 02:07:55,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2025-03-04 02:07:55,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:07:55,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-04 02:07:55,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:08:00,175 INFO L124 PetriNetUnfolderBase]: 45404/60478 cut-off events. [2025-03-04 02:08:00,176 INFO L125 PetriNetUnfolderBase]: For 119690/119696 co-relation queries the response was YES. [2025-03-04 02:08:00,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184734 conditions, 60478 events. 45404/60478 cut-off events. For 119690/119696 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 358533 event pairs, 5639 based on Foata normal form. 748/61220 useless extension candidates. Maximal degree in co-relation 184711. Up to 47448 conditions per place. [2025-03-04 02:08:00,787 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 86 selfloop transitions, 12 changer transitions 84/187 dead transitions. [2025-03-04 02:08:00,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 187 transitions, 1140 flow [2025-03-04 02:08:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 02:08:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 02:08:00,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2025-03-04 02:08:00,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.532 [2025-03-04 02:08:00,789 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 242 flow. Second operand 10 states and 266 transitions. [2025-03-04 02:08:00,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 187 transitions, 1140 flow [2025-03-04 02:08:01,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 187 transitions, 1085 flow, removed 23 selfloop flow, removed 5 redundant places. [2025-03-04 02:08:01,797 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 310 flow [2025-03-04 02:08:01,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=310, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2025-03-04 02:08:01,798 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2025-03-04 02:08:01,799 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 310 flow [2025-03-04 02:08:01,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2025-03-04 02:08:01,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:08:01,799 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:08:01,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 02:08:01,800 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)] === [2025-03-04 02:08:01,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:08:01,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1772327785, now seen corresponding path program 1 times [2025-03-04 02:08:01,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:08:01,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609434011] [2025-03-04 02:08:01,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:08:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:08:01,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-04 02:08:01,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 02:08:01,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:08:01,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:08:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:08:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:08:02,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609434011] [2025-03-04 02:08:02,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609434011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:08:02,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:08:02,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 02:08:02,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102437885] [2025-03-04 02:08:02,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:08:02,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 02:08:02,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:08:02,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 02:08:02,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 02:08:02,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-04 02:08:02,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 310 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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) [2025-03-04 02:08:02,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:08:02,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-04 02:08:02,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand