./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix030_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix030_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20a2c57970e5e291ffc10826c9a5fbe3296a1e55ae86cfd2b786718aae571bfa --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:31:12,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:31:12,873 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:31:12,880 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:31:12,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:31:12,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:31:12,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:31:12,906 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:31:12,906 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:31:12,907 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:31:12,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:31:12,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:31:12,908 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:31:12,908 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:31:12,908 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:31:12,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:31:12,909 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:31:12,909 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:31:12,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:31:12,909 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:31:12,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:31:12,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:31:12,909 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:31:12,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:31:12,909 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:31:12,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:31:12,909 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:31:12,910 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:31:12,910 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:31:12,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:31:12,910 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:31:12,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:31:12,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:31:12,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:31:12,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:31:12,911 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:31:12,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:31:12,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:31:12,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:31:12,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:31:12,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:31:12,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:31:12,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:31:12,911 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 -> 20a2c57970e5e291ffc10826c9a5fbe3296a1e55ae86cfd2b786718aae571bfa [2025-03-13 21:31:13,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:31:13,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:31:13,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:31:13,153 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:31:13,153 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:31:13,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix030_tso.i [2025-03-13 21:31:14,329 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c882cf7/1538ea983bfc469c9d23cd4dab812f90/FLAG310010c64 [2025-03-13 21:31:14,633 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:31:14,636 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix030_tso.i [2025-03-13 21:31:14,651 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c882cf7/1538ea983bfc469c9d23cd4dab812f90/FLAG310010c64 [2025-03-13 21:31:14,896 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c882cf7/1538ea983bfc469c9d23cd4dab812f90 [2025-03-13 21:31:14,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:31:14,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:31:14,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:31:14,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:31:14,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:31:14,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:31:14" (1/1) ... [2025-03-13 21:31:14,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc18e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:14, skipping insertion in model container [2025-03-13 21:31:14,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:31:14" (1/1) ... [2025-03-13 21:31:14,935 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:31:15,070 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/mix030_tso.i[944,957] [2025-03-13 21:31:15,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:31:15,229 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:31:15,238 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/mix030_tso.i[944,957] [2025-03-13 21:31:15,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:31:15,321 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:31:15,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15 WrapperNode [2025-03-13 21:31:15,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:31:15,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:31:15,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:31:15,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:31:15,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,377 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2025-03-13 21:31:15,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:31:15,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:31:15,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:31:15,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:31:15,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,413 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-13 21:31:15,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,422 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,427 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:31:15,432 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:31:15,432 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:31:15,432 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:31:15,433 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (1/1) ... [2025-03-13 21:31:15,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:31:15,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:31:15,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-13 21:31:15,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-13 21:31:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-13 21:31:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:31:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-13 21:31:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-13 21:31:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-13 21:31:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-13 21:31:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-13 21:31:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-13 21:31:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-13 21:31:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-13 21:31:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:31:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-13 21:31:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:31:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:31:15,477 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:31:15,568 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:31:15,569 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:31:15,844 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:31:15,845 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:31:15,846 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:31:16,057 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:31:16,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:31:16 BoogieIcfgContainer [2025-03-13 21:31:16,058 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:31:16,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:31:16,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:31:16,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:31:16,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:31:14" (1/3) ... [2025-03-13 21:31:16,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715733d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:31:16, skipping insertion in model container [2025-03-13 21:31:16,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:31:15" (2/3) ... [2025-03-13 21:31:16,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715733d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:31:16, skipping insertion in model container [2025-03-13 21:31:16,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:31:16" (3/3) ... [2025-03-13 21:31:16,065 INFO L128 eAbstractionObserver]: Analyzing ICFG mix030_tso.i [2025-03-13 21:31:16,076 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:31:16,077 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix030_tso.i that has 5 procedures, 49 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-13 21:31:16,079 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:31:16,133 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:31:16,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2025-03-13 21:31:16,194 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2025-03-13 21:31:16,197 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:31:16,202 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 98 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2025-03-13 21:31:16,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2025-03-13 21:31:16,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2025-03-13 21:31:16,215 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:31:16,226 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;@56cd86ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:31:16,227 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-13 21:31:16,233 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:31:16,233 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-13 21:31:16,233 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:31:16,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:31:16,234 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:31:16,234 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:31:16,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:31:16,239 INFO L85 PathProgramCache]: Analyzing trace with hash 991786462, now seen corresponding path program 1 times [2025-03-13 21:31:16,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:31:16,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758361736] [2025-03-13 21:31:16,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:31:16,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:31:16,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-13 21:31:16,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-13 21:31:16,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:31:16,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:31:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:31:16,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:31:16,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758361736] [2025-03-13 21:31:16,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758361736] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:31:16,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:31:16,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 21:31:16,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131945043] [2025-03-13 21:31:16,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:31:16,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:31:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:31:16,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:31:16,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:31:16,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-13 21:31:16,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:31:16,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:31:16,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-13 21:31:16,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:31:20,273 INFO L124 PetriNetUnfolderBase]: 40307/53607 cut-off events. [2025-03-13 21:31:20,274 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2025-03-13 21:31:20,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107051 conditions, 53607 events. 40307/53607 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 1598. Compared 308519 event pairs, 5315 based on Foata normal form. 1512/54867 useless extension candidates. Maximal degree in co-relation 107039. Up to 45361 conditions per place. [2025-03-13 21:31:20,613 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 54 selfloop transitions, 2 changer transitions 2/65 dead transitions. [2025-03-13 21:31:20,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 258 flow [2025-03-13 21:31:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:31:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:31:20,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-03-13 21:31:20,623 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6394557823129252 [2025-03-13 21:31:20,624 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 94 transitions. [2025-03-13 21:31:20,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 258 flow [2025-03-13 21:31:20,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-13 21:31:20,634 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2025-03-13 21:31:20,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2025-03-13 21:31:20,639 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2025-03-13 21:31:20,639 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2025-03-13 21:31:20,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:31:20,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:31:20,640 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:31:20,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:31:20,640 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:31:20,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:31:20,641 INFO L85 PathProgramCache]: Analyzing trace with hash -734796307, now seen corresponding path program 1 times [2025-03-13 21:31:20,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:31:20,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323440897] [2025-03-13 21:31:20,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:31:20,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:31:20,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-13 21:31:20,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-13 21:31:20,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:31:20,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:31:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:31:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:31:21,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323440897] [2025-03-13 21:31:21,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323440897] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:31:21,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:31:21,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:31:21,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520986451] [2025-03-13 21:31:21,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:31:21,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:31:21,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:31:21,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:31:21,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:31:21,699 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:31:21,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:31:21,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:31:21,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:31:21,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:31:29,061 INFO L124 PetriNetUnfolderBase]: 105861/141017 cut-off events. [2025-03-13 21:31:29,061 INFO L125 PetriNetUnfolderBase]: For 4552/4552 co-relation queries the response was YES. [2025-03-13 21:31:29,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285981 conditions, 141017 events. 105861/141017 cut-off events. For 4552/4552 co-relation queries the response was YES. Maximal size of possible extension queue 3833. Compared 908211 event pairs, 4331 based on Foata normal form. 0/138350 useless extension candidates. Maximal degree in co-relation 285971. Up to 57009 conditions per place. [2025-03-13 21:31:29,661 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 74 selfloop transitions, 13 changer transitions 164/256 dead transitions. [2025-03-13 21:31:29,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 256 transitions, 1052 flow [2025-03-13 21:31:29,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-13 21:31:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-13 21:31:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 362 transitions. [2025-03-13 21:31:29,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6156462585034014 [2025-03-13 21:31:29,665 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 12 states and 362 transitions. [2025-03-13 21:31:29,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 256 transitions, 1052 flow [2025-03-13 21:31:29,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 256 transitions, 1028 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-13 21:31:29,683 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 244 flow [2025-03-13 21:31:29,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=244, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2025-03-13 21:31:29,684 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2025-03-13 21:31:29,684 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 244 flow [2025-03-13 21:31:29,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:31:29,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:31:29,684 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:31:29,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:31:29,685 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:31:29,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:31:29,686 INFO L85 PathProgramCache]: Analyzing trace with hash -626045426, now seen corresponding path program 1 times [2025-03-13 21:31:29,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:31:29,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061639297] [2025-03-13 21:31:29,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:31:29,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:31:29,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 21:31:29,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:31:29,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:31:29,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:31:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:31:30,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:31:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061639297] [2025-03-13 21:31:30,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061639297] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:31:30,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:31:30,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:31:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216209833] [2025-03-13 21:31:30,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:31:30,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:31:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:31:30,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:31:30,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:31:30,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:31:30,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:31:30,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:31:30,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:31:30,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:31:36,828 INFO L124 PetriNetUnfolderBase]: 78567/106262 cut-off events. [2025-03-13 21:31:36,828 INFO L125 PetriNetUnfolderBase]: For 150951/150951 co-relation queries the response was YES. [2025-03-13 21:31:37,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325019 conditions, 106262 events. 78567/106262 cut-off events. For 150951/150951 co-relation queries the response was YES. Maximal size of possible extension queue 2819. Compared 666967 event pairs, 18111 based on Foata normal form. 2660/108897 useless extension candidates. Maximal degree in co-relation 324998. Up to 66141 conditions per place. [2025-03-13 21:31:37,602 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 72 selfloop transitions, 3 changer transitions 103/183 dead transitions. [2025-03-13 21:31:37,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 183 transitions, 1226 flow [2025-03-13 21:31:37,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:31:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:31:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2025-03-13 21:31:37,604 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5685131195335277 [2025-03-13 21:31:37,604 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 244 flow. Second operand 7 states and 195 transitions. [2025-03-13 21:31:37,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 183 transitions, 1226 flow [2025-03-13 21:31:38,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 183 transitions, 1158 flow, removed 34 selfloop flow, removed 4 redundant places. [2025-03-13 21:31:38,965 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 245 flow [2025-03-13 21:31:38,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2025-03-13 21:31:38,967 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2025-03-13 21:31:38,968 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 245 flow [2025-03-13 21:31:38,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:31:38,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:31:38,968 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:31:38,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:31:38,968 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:31:38,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:31:38,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1904045736, now seen corresponding path program 1 times [2025-03-13 21:31:38,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:31:38,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011860360] [2025-03-13 21:31:38,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:31:38,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:31:38,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-13 21:31:39,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:31:39,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:31:39,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:31:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:31:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:31:39,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011860360] [2025-03-13 21:31:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011860360] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:31:39,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:31:39,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:31:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594296624] [2025-03-13 21:31:39,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:31:39,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:31:39,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:31:39,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:31:39,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:31:39,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:31:39,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 245 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) [2025-03-13 21:31:39,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:31:39,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:31:39,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:31:45,248 INFO L124 PetriNetUnfolderBase]: 70780/95818 cut-off events. [2025-03-13 21:31:45,248 INFO L125 PetriNetUnfolderBase]: For 147203/147205 co-relation queries the response was YES. [2025-03-13 21:31:45,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286893 conditions, 95818 events. 70780/95818 cut-off events. For 147203/147205 co-relation queries the response was YES. Maximal size of possible extension queue 2408. Compared 600918 event pairs, 25022 based on Foata normal form. 1644/97457 useless extension candidates. Maximal degree in co-relation 286869. Up to 80404 conditions per place. [2025-03-13 21:31:46,041 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 69 selfloop transitions, 4 changer transitions 73/151 dead transitions. [2025-03-13 21:31:46,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 151 transitions, 984 flow [2025-03-13 21:31:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:31:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:31:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2025-03-13 21:31:46,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5422740524781341 [2025-03-13 21:31:46,042 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 245 flow. Second operand 7 states and 186 transitions. [2025-03-13 21:31:46,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 151 transitions, 984 flow [2025-03-13 21:31:47,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 151 transitions, 960 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-13 21:31:47,432 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 289 flow [2025-03-13 21:31:47,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2025-03-13 21:31:47,433 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2025-03-13 21:31:47,433 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 289 flow [2025-03-13 21:31:47,433 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) [2025-03-13 21:31:47,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:31:47,433 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:31:47,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:31:47,433 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:31:47,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:31:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash 509901919, now seen corresponding path program 1 times [2025-03-13 21:31:47,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:31:47,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57074325] [2025-03-13 21:31:47,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:31:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:31:47,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:31:47,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:31:47,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:31:47,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:31:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:31:47,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:31:47,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57074325] [2025-03-13 21:31:47,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57074325] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:31:47,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:31:47,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:31:47,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265970793] [2025-03-13 21:31:47,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:31:47,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:31:47,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:31:47,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:31:47,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:31:47,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-13 21:31:47,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:31:47,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:31:47,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-13 21:31:47,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand