./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix005.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix005.opt.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 00:58:13,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 00:58:13,600 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 00:58:13,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 00:58:13,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 00:58:13,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 00:58:13,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 00:58:13,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 00:58:13,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 00:58:13,622 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 00:58:13,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 00:58:13,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 00:58:13,623 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 00:58:13,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 00:58:13,623 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 00:58:13,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 00:58:13,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 00:58:13,623 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 00:58:13,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 00:58:13,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 00:58:13,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 00:58:13,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 00:58:13,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 00:58:13,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 00:58:13,624 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 00:58:13,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 00:58:13,624 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 00:58:13,624 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 00:58:13,624 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 00:58:13,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 00:58:13,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 00:58:13,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 00:58:13,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 00:58:13,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 00:58:13,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 00:58:13,625 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 00:58:13,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 00:58:13,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 00:58:13,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 00:58:13,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 00:58:13,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 00:58:13,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 00:58:13,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 00:58:13,626 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-jdk21/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 -> 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 [2025-02-08 00:58:13,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 00:58:13,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 00:58:13,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 00:58:13,863 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 00:58:13,863 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 00:58:13,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix005.opt.i [2025-02-08 00:58:15,002 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d84bb8db/9205df964d034d47add30c82616e967c/FLAG7ccef13e8 [2025-02-08 00:58:15,266 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 00:58:15,266 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix005.opt.i [2025-02-08 00:58:15,277 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d84bb8db/9205df964d034d47add30c82616e967c/FLAG7ccef13e8 [2025-02-08 00:58:15,287 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d84bb8db/9205df964d034d47add30c82616e967c [2025-02-08 00:58:15,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 00:58:15,291 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 00:58:15,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 00:58:15,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 00:58:15,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 00:58:15,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120b8cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15, skipping insertion in model container [2025-02-08 00:58:15,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,333 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 00:58:15,455 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix005.opt.i[944,957] [2025-02-08 00:58:15,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 00:58:15,591 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 00:58:15,601 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix005.opt.i[944,957] [2025-02-08 00:58:15,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 00:58:15,663 INFO L204 MainTranslator]: Completed translation [2025-02-08 00:58:15,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15 WrapperNode [2025-02-08 00:58:15,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 00:58:15,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 00:58:15,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 00:58:15,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 00:58:15,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,697 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2025-02-08 00:58:15,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 00:58:15,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 00:58:15,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 00:58:15,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 00:58:15,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,711 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,727 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]. [2025-02-08 00:58:15,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,733 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 00:58:15,738 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 00:58:15,738 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 00:58:15,738 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 00:58:15,739 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (1/1) ... [2025-02-08 00:58:15,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 00:58:15,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:58:15,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 00:58:15,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 00:58:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 00:58:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 00:58:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 00:58:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 00:58:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 00:58:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 00:58:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 00:58:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 00:58:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-08 00:58:15,792 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-08 00:58:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 00:58:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 00:58:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 00:58:15,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 00:58:15,793 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 00:58:15,904 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 00:58:15,905 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 00:58:16,160 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 00:58:16,160 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 00:58:16,372 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 00:58:16,373 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 00:58:16,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:58:16 BoogieIcfgContainer [2025-02-08 00:58:16,373 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 00:58:16,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 00:58:16,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 00:58:16,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 00:58:16,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 12:58:15" (1/3) ... [2025-02-08 00:58:16,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ff0dff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:58:16, skipping insertion in model container [2025-02-08 00:58:16,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:58:15" (2/3) ... [2025-02-08 00:58:16,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ff0dff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:58:16, skipping insertion in model container [2025-02-08 00:58:16,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:58:16" (3/3) ... [2025-02-08 00:58:16,382 INFO L128 eAbstractionObserver]: Analyzing ICFG mix005.opt.i [2025-02-08 00:58:16,392 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 00:58:16,394 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix005.opt.i that has 5 procedures, 50 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-08 00:58:16,394 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 00:58:16,447 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 00:58:16,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2025-02-08 00:58:16,506 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-02-08 00:58:16,509 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 00:58:16,511 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 98 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. [2025-02-08 00:58:16,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2025-02-08 00:58:16,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2025-02-08 00:58:16,525 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 00:58:16,535 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;@2c3dfbb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 00:58:16,538 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-08 00:58:16,548 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 00:58:16,548 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2025-02-08 00:58:16,548 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 00:58:16,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:58:16,549 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:58:16,549 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 00:58:16,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:58:16,553 INFO L85 PathProgramCache]: Analyzing trace with hash 368428123, now seen corresponding path program 1 times [2025-02-08 00:58:16,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:58:16,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876591827] [2025-02-08 00:58:16,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:58:16,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:58:16,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 00:58:16,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 00:58:16,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:58:16,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:58:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:58:16,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:58:16,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876591827] [2025-02-08 00:58:16,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876591827] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:58:16,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:58:16,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 00:58:16,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799274467] [2025-02-08 00:58:16,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:58:16,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 00:58:16,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:58:16,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 00:58:16,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 00:58:16,997 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-02-08 00:58:16,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:58:16,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:58:16,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-02-08 00:58:17,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:58:20,937 INFO L124 PetriNetUnfolderBase]: 47351/62867 cut-off events. [2025-02-08 00:58:20,937 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2025-02-08 00:58:21,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125515 conditions, 62867 events. 47351/62867 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 1840. Compared 364887 event pairs, 6239 based on Foata normal form. 1764/64288 useless extension candidates. Maximal degree in co-relation 125503. Up to 53209 conditions per place. [2025-02-08 00:58:21,225 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 56 selfloop transitions, 2 changer transitions 2/67 dead transitions. [2025-02-08 00:58:21,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 266 flow [2025-02-08 00:58:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 00:58:21,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 00:58:21,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-02-08 00:58:21,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64 [2025-02-08 00:58:21,236 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 96 transitions. [2025-02-08 00:58:21,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 266 flow [2025-02-08 00:58:21,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 00:58:21,248 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-02-08 00:58:21,251 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} [2025-02-08 00:58:21,255 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2025-02-08 00:58:21,255 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-02-08 00:58:21,256 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) [2025-02-08 00:58:21,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:58:21,256 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:58:21,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 00:58:21,257 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)] === [2025-02-08 00:58:21,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:58:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2112051584, now seen corresponding path program 1 times [2025-02-08 00:58:21,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:58:21,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784606385] [2025-02-08 00:58:21,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:58:21,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:58:21,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 00:58:21,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 00:58:21,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:58:21,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:58:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:58:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:58:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784606385] [2025-02-08 00:58:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784606385] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:58:21,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:58:21,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 00:58:21,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104004672] [2025-02-08 00:58:21,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:58:21,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 00:58:21,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:58:21,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 00:58:21,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 00:58:21,536 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 00:58:21,536 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) [2025-02-08 00:58:21,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:58:21,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 00:58:21,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:58:29,252 INFO L124 PetriNetUnfolderBase]: 113433/151283 cut-off events. [2025-02-08 00:58:29,253 INFO L125 PetriNetUnfolderBase]: For 4896/4896 co-relation queries the response was YES. [2025-02-08 00:58:29,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306507 conditions, 151283 events. 113433/151283 cut-off events. For 4896/4896 co-relation queries the response was YES. Maximal size of possible extension queue 4267. Compared 982772 event pairs, 34615 based on Foata normal form. 0/148224 useless extension candidates. Maximal degree in co-relation 306497. Up to 67325 conditions per place. [2025-02-08 00:58:29,899 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 61 selfloop transitions, 8 changer transitions 137/211 dead transitions. [2025-02-08 00:58:29,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 211 transitions, 864 flow [2025-02-08 00:58:29,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 00:58:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 00:58:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2025-02-08 00:58:29,901 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6422222222222222 [2025-02-08 00:58:29,901 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 289 transitions. [2025-02-08 00:58:29,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 211 transitions, 864 flow [2025-02-08 00:58:30,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 211 transitions, 846 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 00:58:30,021 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2025-02-08 00:58:30,021 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2025-02-08 00:58:30,022 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2025-02-08 00:58:30,022 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2025-02-08 00:58:30,022 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) [2025-02-08 00:58:30,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:58:30,022 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:58:30,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 00:58:30,023 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)] === [2025-02-08 00:58:30,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:58:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash -660012671, now seen corresponding path program 1 times [2025-02-08 00:58:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:58:30,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485423958] [2025-02-08 00:58:30,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:58:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:58:30,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 00:58:30,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 00:58:30,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:58:30,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:58:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:58:30,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:58:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485423958] [2025-02-08 00:58:30,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485423958] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:58:30,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:58:30,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 00:58:30,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457048932] [2025-02-08 00:58:30,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:58:30,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 00:58:30,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:58:30,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 00:58:30,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 00:58:30,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 00:58:30,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2025-02-08 00:58:30,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:58:30,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 00:58:30,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:58:37,283 INFO L124 PetriNetUnfolderBase]: 84457/113245 cut-off events. [2025-02-08 00:58:37,283 INFO L125 PetriNetUnfolderBase]: For 130052/130054 co-relation queries the response was YES. [2025-02-08 00:58:37,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322773 conditions, 113245 events. 84457/113245 cut-off events. For 130052/130054 co-relation queries the response was YES. Maximal size of possible extension queue 3050. Compared 712259 event pairs, 15269 based on Foata normal form. 2800/115966 useless extension candidates. Maximal degree in co-relation 322755. Up to 48209 conditions per place. [2025-02-08 00:58:38,012 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 78 selfloop transitions, 9 changer transitions 126/218 dead transitions. [2025-02-08 00:58:38,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 218 transitions, 1298 flow [2025-02-08 00:58:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 00:58:38,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 00:58:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 290 transitions. [2025-02-08 00:58:38,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58 [2025-02-08 00:58:38,014 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 290 transitions. [2025-02-08 00:58:38,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 218 transitions, 1298 flow [2025-02-08 00:58:39,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 218 transitions, 1148 flow, removed 38 selfloop flow, removed 4 redundant places. [2025-02-08 00:58:39,257 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 270 flow [2025-02-08 00:58:39,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=270, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2025-02-08 00:58:39,259 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2025-02-08 00:58:39,260 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 270 flow [2025-02-08 00:58:39,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2025-02-08 00:58:39,260 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:58:39,260 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:58:39,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 00:58:39,260 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)] === [2025-02-08 00:58:39,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:58:39,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1356119026, now seen corresponding path program 1 times [2025-02-08 00:58:39,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:58:39,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111344821] [2025-02-08 00:58:39,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:58:39,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:58:39,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 00:58:39,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 00:58:39,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:58:39,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:58:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:58:39,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:58:39,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111344821] [2025-02-08 00:58:39,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111344821] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:58:39,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:58:39,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 00:58:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521981205] [2025-02-08 00:58:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:58:39,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 00:58:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:58:39,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 00:58:39,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 00:58:39,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 00:58:39,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:58:39,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:58:39,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 00:58:39,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:58:46,160 INFO L124 PetriNetUnfolderBase]: 74257/99485 cut-off events. [2025-02-08 00:58:46,161 INFO L125 PetriNetUnfolderBase]: For 165523/165525 co-relation queries the response was YES. [2025-02-08 00:58:46,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294668 conditions, 99485 events. 74257/99485 cut-off events. For 165523/165525 co-relation queries the response was YES. Maximal size of possible extension queue 2427. Compared 618442 event pairs, 14021 based on Foata normal form. 2100/101512 useless extension candidates. Maximal degree in co-relation 294643. Up to 44249 conditions per place. [2025-02-08 00:58:47,074 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 85 selfloop transitions, 14 changer transitions 112/216 dead transitions. [2025-02-08 00:58:47,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 216 transitions, 1362 flow [2025-02-08 00:58:47,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 00:58:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 00:58:47,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 282 transitions. [2025-02-08 00:58:47,077 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.564 [2025-02-08 00:58:47,077 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 270 flow. Second operand 10 states and 282 transitions. [2025-02-08 00:58:47,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 216 transitions, 1362 flow [2025-02-08 00:58:50,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 216 transitions, 1311 flow, removed 23 selfloop flow, removed 5 redundant places. [2025-02-08 00:58:50,105 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 422 flow [2025-02-08 00:58:50,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=422, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2025-02-08 00:58:50,106 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2025-02-08 00:58:50,106 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 422 flow [2025-02-08 00:58:50,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:58:50,106 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:58:50,106 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:58:50,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 00:58:50,106 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)] === [2025-02-08 00:58:50,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:58:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1300425963, now seen corresponding path program 1 times [2025-02-08 00:58:50,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:58:50,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661480063] [2025-02-08 00:58:50,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:58:50,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:58:50,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 00:58:50,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 00:58:50,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:58:50,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:58:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:58:50,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:58:50,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661480063] [2025-02-08 00:58:50,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661480063] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:58:50,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:58:50,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 00:58:50,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077399609] [2025-02-08 00:58:50,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:58:50,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 00:58:50,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:58:50,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 00:58:50,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 00:58:50,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 00:58:50,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 422 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) [2025-02-08 00:58:50,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:58:50,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 00:58:50,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand